MILITARY STANDARD - MIL-STD-188everyspec.com/MIL-STD/MIL-STD-1700-1799/download... · military...

MIL-STD-176431 JANUARY 1980

MILITARY STANDARD

WASHERS

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.Ino

.045

.Ow1-*49-70.71

.12-73-14

I 1 I

.s5 .045 .16

.alL070 .050 -?71155 .050 mlxa .Om -?9

1%0 .055 44.517 i.ao .W *

I 620 on 41

Tc

—

.



M1l. STD.176#31 January 1980

s[cltou 5Q5●A$M[R LOCK ROD[440

APPLICAM[ 00CIJUEKT WAS513

14b-!1

STRAIGHT lMISol\TANC[(L CIR[f

T.015

M+Jk--2? THRU %SECTION X-X

. .. . ........-

.Ma!tfta! ... ., .,, . . Spflng Slrrl

hlKIIt? tm sh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ktum plate

ri~tbe>itiwciii ~$lJ g:. . . . . . . 1

c [ F T P

.m?

.W2

.m2

06?.062.071

.0110!39.090

09011711?

.112

.12s125

.125

.12515125

MAS513

OasfIm.A R

.44

.W

.56

63.?5

100

1 1?I 311!0

162115169

200212125

2Z263215Iu

o

&*1

.%2

6?$,71?931

] ~?[w1.422

1 Mi

1681

! 859

1%921092 N.

2315?5947 lW2E15

u

.0s

.0s

.01

.049

.0490$7

.0s7

.066

.014

.0)4

.0%D36

.a6

.Io9MB

109Iwlmm

J L

.272334

.B6

459

.520,641

1)2.891

1 D22

11471.27?I 31

1511116431?66

189120162141236

2147?3

.327

M4XIS!19

661?q~916

1Oa11541.254

L379I 495I 607

1132I 8s7i 9132mf!

!00578

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1 1%[ B4i S16

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207827192 3)5

2464‘21032860?%4

.12s

.12s

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.125

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.168

MlJ4MI&9

.219219-.

-.----

--------

.a3

.355

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.54267S

xm.944

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I.sn1,631,163

188620162.2012336

.050

.050

.050

063.063.011

071000.090

.090112112

.112

.125m

.123

.125125

.125

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. ;6

.NJ-x)

-22

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-33.3234

-xi

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io5 I



‘7-

NIL-ST&176431 Jvuary 1900

SECTION X*ASHER LOCM SPRIltG HELICAL

APPLlcABL E oocuM[NT5 US35336, M\~5~, ti$~l~q

m-C

I

,

.

Ill—.A-I

+

I

I’_~ T*I

-“1

TABLf I WI mmmsn.4

CRESPh m Itltid

Mltfls !, . . . . . . . . . . Orb SIsef Ssw

m m 420 m 420 As Sllq

Rmdw fret* . . . . . . -Iw plate halhm aBd ads yg~ ~~

HH$(RXAWSII) . . . . CW3 U>53 C4>53 Not spmifid C3M3 C3H3 C45S3 C3w3 0s53 NW .

A!(!tb”lum

t

.K2 .m2

.135.mE1 .172

.Zw

+

.114.173.1!5

.115 .209

dl USM68● US3S3B. IM35340. INS353E.M Ibhm. I bshno. I Cbsha. I b*m.

.Ou .1 —

.020 -3 —

.Om -- -33

.02) — -- .; “:

.022 .5 -- —

.034 — 4

.025 -- -U1 -- .!4

Usma ● US51664

+

Rsam

-41

-23

+

-43

+

.25 -45

--

-134

—

-135

216 .Om -7 -. — — .27 -47 —

.141 .2W .031 — .41 -- 40 — -lx.314 .045 — -41 — — —

.(MT 4.K7 : -m

— -- -a 4 —-- -- .4? — —

.w .B3 .W — -u 41 -1~

.047 -9.293 :: m

— -- .29 -6 —-- — .43 --

1

.194 .m .Q41 — -43 42 -la

.254 g.on .10 -- -- -- -m -n —.md – -- .$4 — — -- --

.255 4?9 .M2 – -a -- 43 -- — -133

317 ,y8.C93 -. -. -- -31 -s1 —

-. .1% -- -- --

mm ~~—-

— -- —

-1s3 —-13U -1S3B -% -115— —

— —

.1S4 -135B -Ma 47 -116

— — -- —.1$5 -1s8 -1558 -n -11?— — -- — —

— —— -- —

-3s .1326 -[s68 -99 -IN

-- — —-. -- —

-1s7 -Im -lvB .)m .119

-- --— -- -- —

-Iu -139B -198 -101 -120

-- -- -- ---- -- — --

. .):. -.,, .

5061


—

-sm. 1764A-ry lW

A

I Ius518a ●

W M?1 DJshno

.33# M6 I O?a --

m I 553 125.141 123

.12—

1 L

2+-k-L-.44 1.779 1.109I --

m

da=--E-.x] II1.111‘.2UI.rl .241

-16--

I 1 1

.1631221 .Ua --

n?

J90

1.0[1

1.144 xl=J 464 .219 –

14B3 .= .U161 .2MI —1.799 xl –

ld53 .al –

LI!6 12239 I.W I --

w,tm plalt MO’*IC PJWVJtC mad DO*~ ~

@Jt?

1C4S53 Cb>N Ctlb53 C3$43 CI$43 tC4>53 C3H3 C4553 nae

us35311. MS35340. MS35U . Msu8a. Usslm .MA m DJ*m. DJ*ao Mm. R* m

Msma ● Olsbm.

.45 +4 — .- -}44 .159 -Iae .1596 -102 -121

— --

~

—. 32 -52 -- -- -- – -- --.- -46 -- -- — -- -- .- -- -. --

.46 6!I -- . . .Jtl M lblB MOB ,103 .122

-- -- -- 33 $3 – -- -- -- -- --

.41 -- -u —- -142 -161 1429 .161B -104 -123

-- -- -34 -54 – -- -- – - ---- -a — -- — -- -- -- --

-a +1 — — -14] .362 .143.9 -162B .105 -124

49 * — — .144 -163 -1440 .1638 -la -125

-- -- — +5 -- — — – -- —— -w — — — — — — — — —

-w – 69 — -145 -164 -1458 -U48 .iw -Sa

— — —-- -51 — — — -- -- -- —

,+1 – -?0 -146 -MS .1*B .M58 -m -in

-- — — — -- -- -- -- -- --

-52 – -71 — -141 .166 -147B -1668 -IQ9 . lat

— — — — —-53 -- .?2 — — la -lrl -lalB -167B -Ilo -In— -S3 – — – -- -- — -- “ — --

54 – — — -- -149 -16d -leB -Iwe .111 -lm

55 -- — — — -150 -169 -lWB -100 -112 -131-- .s — — --

.% – – -- – -151 .lJO -151B .1109 -113 -lE

.s? -- -- — — -152 -111 -lm -11lB .114 -13357 -- -- — — — —


.

)...

SECTIOW601SAWER RIcfssEO COUMTIRSUMK, oa[ wRFAcE

APPLICABL[ (KICUMEWTS lIASIW. MS2WZ uS212B6

I -u--0

bled. .. . . . . . . . . . . . . . . .

Pfolatln hntftl . . . . . . .

TIYl*le w!n@l(usl).... . . . . . . .

ttdws (Ibf$al) . . . . . . . . . . .

Bmm

.191

.192

.251

.252

.314315

376.372.439

.441

.W1

.W

.627

.631.151

.19

.871m4

1m2I 0101.171

1135I 2521.260

i.ml.mlM2MO

cMln

.Zlo

.222

.3a

.334

.m2

.396

.el

.423

.5!4

.s43

.622

.Qb4

.na

.765

.s03

.0901.OBL015

].lvI la1278

12651435I 423

1.%0LSS2LS8Sl-m

A Dmu m

.372 .(%9.479 .071.470 .069

.S41 .Q2

.93 .069

.s3 .078

.679 .(US

.697 .ata

.n3 .as

.nl ml.JY4 MS.ms .ma

1.125 .als

1.071 ~1.3mJ .m~

Im .~ .1.s?1 .ms1.U7 .m

17W .119L635 .amLlul .119

lEI$ .Wa2.= .119

2.135 .lW

Za .119

2m J~2723 .119

2.90 .104

CUESTypt 32101341

PmsJv#t

ma KIfid

NASIM? .

M no.

—-x

-4C

:x

&-.

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TC

-lK—

-m--

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--

. 16C--

.18C—

-IOc

--

--

601 I

mom *14UJXI

tool mud

—

C4—

C5

—a

c1

a

Clo—

c12—ci4

--C16

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cm.

C22

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hot XIfled

CS4S

C3—C4

C5

C6

C7

—a

Clo

C12

c14

Clb

Cll

—C20

m—C24—


— —

-

. .

‘\

.


L

SECTION W

-ASHER. RECESSED. COUnTERSURK, TWOSURFACESAPPLICABLE 00CUUEnTS KS94S2,M$9W, uS141SS,MS14177

.

..

4

)..

‘1

I

/

11-JoL.-

TA9LE 1. PM-t.

Jttafeld.....................l w IcREs. I AM* I

IRDtimfms . . . . . . . . . . . . . . . I Otkwd lllad-

Uhum plm l“+m* AA-

I

I“mwbfm.............l Cws I cs~ i CB43 I

++

A 8 cMm ml Mtn

.Ia .3a .176,la .315 .m.166 .B5 .202

.M .s5 .234

.292 .4a .23

.295 .435 .m

II.2s2 -m .2%.2% .570 .232

mII.325 .760 .s9

.317 .700 .s4

um

.31 ‘m s 19l.all .62!)

.s04 i 190 .5$8

.fm 1.12U .614

.6D1.266 .175

1.30? .)75

63 1405 .711

1 w152 ,%

m.Xm

FEE755 16?0 .896

J71 I 141 1.025I 73] 1.025

.600 1.95 1.021

1ml 1.W8 L2MIm Zl% 2-146

D Hwsl . US7U ● MSA41SS● mw.n ●

UJl Mm. mm. baa. mm m.

.076 — 47

.on 47

.076 – a

as *.05 - a.095 49

.1?4 - -4

.133

I -IQ I ~ 1: 1:.as —.1%

.10s -11

.260 -i

.2$4 4

.K1 4

.11? -22 –

.195 -12 —

.lM -1

.%7 -- -1

.13) -13 —

.215 -13

.163 -- 4

.16) -- 4

.165 — -M —

.260 .14

.226 - .20

.Me -- -. -20*

.315 -16

.772 -- — -12I’a -- -1?

.375 -17 -- —

.3XI .- -14

.Ill -. -14

.4s .B

.U -. — -k —

.4M -B

. .‘.-..”. “



SECTIOW 601QAS#tER, RfCfS$[D. TAPER PINAPPLtc ABL[ 00CuuERT AB9?S

ZtrD

E

II

TAME i Par! ambm

Uatelld . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pmlectlw fulls . . . . . . . . . . . . . . . . . . . . . . . .

A

W6411/64

2V64

2s%429/64~ ,~

am9/64

B

1Y3?

3/16

Ilm

2s022713215’16

1 9/321 I S’32

c

IV32W3217/32

MmW3223,33

11.Y16

D

3n6

1344

1Y64

W64W64lfu

15’641Y64

V16vu

YC4

vuwy??

11641164

f)PTIONAL DfSIGN

-3-4

.s

-6.1.8

12-14

@lL-STD. ]76431 a-~ Iwo,

.,.

6011



SECTION ?0!9Altt[R 5Mou LD[R[D SNo R(C[SS[C OIMPLIO 100

APPLICA8L[ 00 CUUIRT NASI169

I ‘-

.

TABLE I PaII nurbs

1

IMatFIlal. . . .

1 , I

CaawP I adPfOleCIIW fmtsh ., ., &vdl?? PXWV-JW

plate wcc !hed

Ma@u2ssof Ien$llr Stfulgm

(ksl). . .

A D c H Tu.. u.. M P:! ‘:’ “o:--!!!

.m 00! -- 06[ -- . . --

.140 .495 .279 .016 .016 -6L -- OML W T6L

.W 02s 4 --- r.m a T6

.079 .Eme -- EMf -- -- --

.6fA .%2 .332 .(M7 .016 W -- DML ~L ~L

(!94 1)3 -8 -. m a Ta

.031 .W! -- 010[ -- -- --

197 645 ~~ ~ lj]~ I~L -. OD1O1 :!OL TIOL

.101 025 .10 -- DD1o Clo T iO

)17 m -- 0416[ -- --

25? 770 .W) In 0 lb 4;6L -- 004161 Cl:h[ T;16L‘-

112 , ??> (It, DC)416 c.:! i 36

1

.145 0516[ --.: t >;~L --.314 .9s .63S .153 DO!JILL C5J6L T5i6L—

MO 02> .5;6 -- 00516 C’!6 1516

.112 M -- LX16f -- -- _-

317 1 on 767 Ill: OK 6161 -- rlcbl;l IX 161 1616L

18.9 02> 616 II(I6 }6 C61S lb16

.300 al -- C!:in[ --442 12WI m a 016 ‘ 101

7)$ 02> ::.

502 1137 10!1

f ~ ~;~L “m : :.1

... ..



‘\

h-

.A

SCCTI(M801WASltER. SPRINGTEBSIM

A~ICAmE K) CltaERT UIL-W-)Z333/3

9

III

Iuaenti . . . . . . . . . . . . . . . . . . ..l s@nqf&d I

IPTolmwch lash. . . . . . . . . . . . . . l-l =1L 1

[ I o M121SV1+Mm Mm

\ 4

.125 .250 .013 -02D -1 -’p

.1% .312 .017 .02s -z 4P

.195 .3T5 .01s .Ozl -3 -P

~ m .a20 .05 -4 -4P.311 42s .oQ -OS1 “s 4P.X2 .?9 .032 .OM 4 4P

.44s IWO .0ss .al -1 .7?

.s12LOOO .Om .07s 4 4P1.W2 .OC1 .a3 4 4P

b31 1.9s .fEi .102 -30 .W

.761 Lm.059 .114 .11 .11Pm .121 -12 -UP

mo l.l!a .ms .lzd -13 .ls

Lou ;:5 g.lB -M -14P.W1 -ss -s9 J

—

.

toil



------

—.-

1

,, ..,tems Division (AFSC);

t,, ~I\AFB, OH 45433 POS7ACJE AND FE ES PAIO

[%]

US8MM

Cornn~ander

Aeronautical Systems llivis

ATTN : ASD/ENESS

on (AFSC

. . — ---r


STANDARDIZA~lON DOCUMENT lMP~OVE~EN1’ PROPOSAL I

INSTFl~CTIONS This form IS pro~ided to SOIICIIbeneflcml comments wh]ch may improve this document andenhance IU use DoD contractors. governmen! actlvltles, manufacturers. vendors, or other prospective users of

the documen! are ln~lted to submit comments to the government Fold on )Ines on reverse side. staple in corner,and send to preparing activlt}’ Attach an? pertinent data =hlch may be of use In improwng this document If

there are add)t)onal papers, attach to form and place both in an envelope addre=ed to preparing actwit~ ~

response WIII be provided to the submitter, when name and address IS provided, wlthln 30 days indicating tha!the 1426 wab received and when any appropriate act]on on it will be completed.NOTE This form shall not be used to submit requests for wa]vers, dev]at]ons or clarification of spec~icat]onrequirements on current contracts Comments submitted on th~s form do not constitute or imply authorizationto waive any portion of the referenced document(s) or to amend contractual requirements.

30 CUMENT IDENTIFIER (.Vumbcr) AN OTITLE

!YIL-STD-1764 WMERS, PREFERRED FOR DESIGN, LISTING OF‘dAME OF ORGANIZATION ANO ADDRESS OF SUBMITTER

~ VENOOR ~ uSER ~ MANUFACTURER—.—.

THAS ANY PART OF THE DOCUMENT CREATED PROBLEMS OR REOUI RED INTERPRETATION IN PROCUREMENT

.—

-

)SE? n IS ANY PART OF IT TOO RIGID. RESTRICTIVE LOOSf OR AMBIGUOUS? PLEASE EXPLAIN BELOW

A GIVE PARAGRAPH NUMBER AND WORDING

B RECOMMENDED WORDING CHANGE

c REASON FOR RECOMMENDED CHANGE(SI

REMARKS

‘DATE

DO ‘*M14261OCT 76

EOI~IONOF 1 JAN 72 wl~t. BE USED UNTIL EXHAUSTED


.., .-.,

MIL-STD-17&31 JanuJry l$BO

-

DEPARTMENT Of OEFENS[Uashingtfm, DC 20301

Mashers Pqeferred for Oesign, Listfng of “

MI L-sTD-1764

1. This Nilitary Standard is approved for use by all DeparUwmts and Agencies of the Department of Defense.

2. Beneficial cements (recoqnendations, diddltlons, deletlons) and any pertinent data which w be of usein improving this docunent should be addressed to. Coomnder, Aeronautical Systems Div~sion (AFSC), ATIN:A5D/ENESS, Uright-Pittterson Air Force Base. Ohio 45433 by using the self-addressed fit.3ndiirdlZdt10n Docment[qmoveamt Proposal (DD FonrI 1426) appearing at the end of this docunent or by letter.

●

)


. . .

FofKuoRo

MIL-STO-176431 Janu4ry 1960

1. The pumosc of this bcmkfo- standard Is to provfde a comodfty type parts docuwt on uashem to aidmilita~ equi~t designefi and ●ngineers tn the selection of pnferwd washers.

2. This docunent amsists of an index of p-ferred standardization documents and a listtng of preferrtdparts within these docments that have been selected w~th respect to configuration, sizes, lengths, materials,and finishes for washers.

3. The selection of preferred documents listed in this standard and the selectioo of part nubm within thepnfernd docwm?nts were made as follows:

a. $electfon of Oocunents

(1) Oocuments listed or scheduled for llsting In the Department of Oefense index of Svectficationsand Standards (0001SS).

(2) Oocummtsbfhich are active for desfgn.

(3) Oocments specifying part nunbers (dash nmbers) which designate specific sizes, materials andfinishes.

b. Selection of Part Numbers

(1) Byconducttnga thorough searcnana evaiuiition ofexisLin~O&pr~ur~tit ?R~GYA:$Gn.

(2) By ●valuation of Preferred parts listed in recent weapon system contracts.

(3) By evaluation of preferrx?d parts lists obtained from industry.

4. To increase the scope and ve~atility of th?s washer standard, periodic revisions will be develowd.Results frcm Standardization studies, MILITARY PARTS CONTROL AOVISORY GRWP (WK4G) evaluations, ●valuationof a new fmlly of washers and mccmnendations from interes@d ●ctivities will form the buls for theserwisions.

iii


MiL-$Tl)-176431 JMuary l$Bo

Pamgmcltb 1.

2.

3.

4.

5.

6.

Sect Ion 100

101

zoo

201

.--1L W.

300

301

302

303

304

400

401

402

403

404

405

406

407

408

409

500

501

502

S03

S(34

ParJg

scow---.-------.----: =------ ., ------------- ------- --------- -------- ~-. -.,--- ---------- ------- 1

E.F$iWEJl DO&WQL3S---a ------------------------- --:--.:----%:=-:==:-:--.-%-:--:----- 1-3

DEFIKIT[OtS -- -- --- - . - - -. - - - - - - - - -- - - - - - --- - - - - - - -- -- ----:- - ---- ---- --- --- -: .- -- ------ 3-4

GENIRAL STATU4EMTS -- %---- --- .--.-, ---=--- -----. -.= -----: ----- ---------- -, ------ -------- ---- 4

DETAILED MQUlMKNTS------------------------------.-=---------------------------- 4

NOTES -------- ------- --------- --------- -------- -------- ------- -= ----- ------- ------ 5

NAMER, BEVEL

Uasher, ‘Be~el, 9-l/20-- .-----------------------------------=-----------=----------------

uASHER, FINISHING

Uasher, Finishing, @We~sMk -------- --------- ------- -------- -----:- ------- ------- -----

,,-. h-- C;”; .h ;-m c)t*h --Osncl ● * lt*9a*e98, y, . *“**, ~---.=- -=---- ------- -, ------ ------ ------ .----= -= =--- ----:- ------ ---

UAWR. FLAT

Uasher, Flat, Rectangular--=:= -------- ------- ------- ------- ==-----. -- ~=--- ------- -: ----- -

Uiisher, Flat, bmd ------- -= ?---- ------- ------- -------- ---=~-7 Tzz ------: --- -------.-::---

Uasher. Flat, Square -------------- ------- ------- -------- ------~ -------- ------- -----------

Uasher, Flat, Square with Radius -------------------------- -: ------------------------- ---

uASHER, KEY

Washer, Key, Bearing ------- -------- --------- ----------- --- =---- -. ----= -------- ------- ---

Uasher, Key, Cup, Lock ----- ?=------- =---------------------- =----------------------------

Uasher. Key, Cup, lock. Spanner Nut -----------------------------------------------------

Uasher, Key, Drive (Synchro)--------------------------------:------:--------------------

Uasher, Key, Flat, General ?uwose----------------------------------:-------------------

Uasher, Key, Locking- ------- ---------- ----------.---- ---.--- ------- ------- ------- -------

Masher, Key, Locking, Special ~sign ----------------------------------------------------

Uasher, Key, Retaining, Uheel Bear~ng-------------------------:-------:-----------------

Uasher, Key, Tdb--- ---------- ---------- ---------- ---------- ---------- ------------ -------

UASHf R, LOCK

Masher, Lock, External Tooth, Counters unk -------------- ------------------------ ---------

Uasher, Lock, External Tooth, Flat ---------------------- --------------------------------

Masher, lock, lntemal Tooth, Flat - - - - -- . - - - -- . - - - - - -- -- -- -- - - ---- - - -- -- - - -- -- -- ---- ----

Uasher, Lock, Internal and Extemdl Tooth, Fiat---------------:~-:--::- ::------::-------

101.1

201.1

202. \

301.1

302.1

303. ~

304.1

401.1

402.1

403.1

404.1

405.1

406.

407.

408.

405.1

501.1

S02.1

S03. I

504.1

iv


——

-----

MIL-STD-176431 January 1980

SECTIONS - Continued

Section 505

506

600

601

602

603

700

701

800

801

Masher, Lock, Rod End----------------------------------------------------- -------------

Masher, Lock, Spring, Helical ------------------- -------------------------------- -------

MASHER, Rf~SSEO

Masher, Fkcessed, Countersunk, One Surface - - . - - . - - - - . - - .- - . - - - . - - -- - - - --- -- - -- -- - - - --- -

Masher, Recessed, Count.emunk, Two Surfaces -- - - - - - . - - .- -- - --- -- - -- - - - -- - - - ---- --- - -- - --

Masher, Recessed, Taper Pin - - - - - - - - - - -- . - - - - - . - - -- . - . . -- -- -- - --- . - ---- - - - - -- -------- ---

K4StIfR, SHOULDERED AND RECESSED

Masher, Shouldered and Recessed, Diq~ed, 1~----------------------------- .---.-------

UASWR, SPRING TENSION

Uasher, Spring Tension -- - - -- -- - ---- . --- - - - - - - - - - -- -- -- - - -- -- - -- - -- -- -- - - -- ----- ----- ---

PwJg

505.1 —.

506.1

601.1

602.1

603. J

701.1

‘\

)

,. ... .

v


I

.

).’


.

-

‘)

“)

MIL-STD]764

31 January 1980

1, SCOPE

1.1 scope. lh~s stan~ard Protilde$a llstlng of oreferwd washers encompassing the follouln$ character ~>-tlcs:

d. ConfigurationI

b. Size4

c. Materials

d. Protective Codtings dnd Finishes

1.2 Purpose. The purpose of this standard !s as follcxts:

a. F’rovlde the designer with a ]lstlng of preferred washers to pmnote their use In design of ueaponsystems and equipments.

r). Control and m)nimlze the variety of washers used in military quipment thereby facilitating logls-tlc supoort of the equlcmnt during Its life cycle.

1.3 @pllcatlon. To mlnlmlze the proliferation of washers, only the preferred part n-er listed herein lSauthorized for use in new design. All other part numbers, even though shown on current Military Speciflcat}onSheets, Military Standards (MS), Ndtional AerosDace Standards (NA.S), Aeronautical Standards (AS), and AirForce/Navy Aeronautical standard< (AN), are not approved for use In new design unless approved by the cogn\-zant Government procuring actlv~ty.

1.4 Intended Use. ]wlement this standard by including one of the folltiing options In the contract:

. 0--..8-- :~j~ e+.r.A,wA..”..””, “ :2 .3 s“Jcp?m7.t ● - .- --A ---- +.w U** G*1U Usc

- .*.-A.-4 . ..-* . . ~“ em 1:~~~r

flIL-STD~i51<~W”Wh~n thus required,W% *~-*9-* u SWL89 -a , .~-~,”- ,

only the washers listed in both the ●nd use type and this standard are

. acceptable. Use of other washers requires approval of the Govemaent procuring ●ctivtty.

b. Require this standard as a guide to be used with ●n ●nd use type standard such as MIL-STD-1471 orMIL-STO-1515. Uhen thus required, the washers listed in the end use type standard and thfs standard areacceptable. The designer must assure himself the washem listed tn both the ●nd use type standard and thisstandard am not adequate for his requirenu?nt before using washem not Ilstid herein. Use of washers notlisted In the end use type standard requires approval of theGovemamt procuring activity.

c. Require this standard and indicate exceptions to it. When thus required, only the washers listedin this standard and not excluded by the exceptions are acceptable. Use of other washers requires approvalof the Government procuring actlvlty.

d. Requite this standard as a guide. Uhen thus required, the designer must assure himself the Wdsher$llsted in this standard are not adequate for the requirement before using other washem.

2. REFERENCED DOCLMENTS

2.1 Issues of Docunents. The folloulng doc~nts of the issue in ●ffect on date of invitation for bids orre~ues t for proposal fOm a part Of this standard to the ●xtent s~cified herein.

SPECIFICATIONS

MILITARY

MIL-u-12133/l - Masher, SPrlng TensIon (8elleville Spring).

STANDARDS

MILITARY

69276

MS9320

%9482

m9549

MS9581

d

ddsher, Key-Cres, MS 5510. lWO Locking.

Masher, Flat - AM 6350.

Masher. flat - A% 5510.

- Washer, Flat - Steel MS 6437 or M 6485, Diffused Rickel - Catii- Plated, Countersunk.

- Ndsher, Flat - fW4S 551(3.

- Masher, Kev-Cres, APE 5510, 90° Locking.

. ...?

.

1


MIL-STD-]76431 January 1980

..\

sTNmARDs

MIL]TARV -

l1595E2

%9768

KS9880

NS9952

MS14151

MS14155

Ms14177

m157!35

MS15820

KS16212

MS171B6

..e. -----nhtwoy

619070

HS2CHM2

?!S21206

US21258

k521307

ftS25081

!4s25440

MSZ7111

!!S27129

MS27183

m35333

HS35334

US35335

RS35338

MS35340

MS35790

RS45904

MS51848

US51859

—Continued

Uasher, Key-Cres, Ak45 5510, 2?0° Locking.

Uasher, Flat-Cres. MS 552S or MS 5737, Countemunk.

Washer, Cup, Lock-Cres, AMS 5510.

Uasher, Cup, Lock-Spanner Nut Cres, PMS 5646.

Uasher, Flat, Round, Corrosion Resisting Steel (for Electrical Applications).

Uasher, Recessed Countersunk Two Surfaces. for Use with Wh~l Bolts and Nuts up to mdIncludlng 180 KS! Ftu.

Masher, Recessed, Countersunk Two Surfaces, for Use w~th Uheel Bolts and Nuts up to andIncludlng 220 ~Sl Ftu.

Uasher, Flat-ttetal, Round, General Purpose (IN./W4).

Uashers. lock.

idasher, Flat,

Uashtr, Drive

riasners, Key,

Uashers, Key,

Special Oesign. Galvanized Steel.

Metal, Round. Medium Series, Nonmagnetic.

(Synchro ).

iietaining, 6aii and iioiier bearinq, tight Series.

Retaining, Ball and Roller Bearing, Regular Serles-

Uasher, Countersunk and Plain, High Strength.

Washer, Countersunk and Plain, for Use with Bolts and Nuts up to ●nd Including 220 KSIFtq.

Uasher, Key, Retaining, Uheel Bearing.

Uasher, Flat (Square).

Uasher, Key.

Mashers, for Use with Aircraft Aluminun Tertnina]s.

Uasher, Key-Flat, General Purpose.

Masher, Ftnishtng-Countemunk.

Uasher, Flat-Round, Steel, Ca(kniwa Plated. General PuvOse (lN./M).

Uasher, Lock, Flat-Internal Tooth.

Masher, Lock-Flat, Heavy, Internal Tooth.

Uasher, Lock, Flat-External Tooth (lN./W).

blasher, Lock-Spring, Hellcal, Regular (Medium) Series, {!N./W).

Uasher, Lock-l+ellcal Spring, Extra Outy.

Uasher, Lock-Countersunk, 100°, External Tooth (lN./M).

Uasher, Lock, Internal and Extema! Tooth.

Masher, Lock-Helical Spring, Hi-Collar.

Masher, Flat-Plastic (Nylon).

“\)

9.


-—

HIL-STO-176431 January 1980

STANOARDS

MILITARY - Conttnued

RS51867 UdShQr, Metal, Flat, Plain, Rectangular.

MS172271 thruMS172320 - Uasher, Key-Single, 8earing Retaining, AM 6350.

AIR FORCE-NAVY AERONAUTICAL

AN960 - Uasher, Flat.

AN961 - Uasher-Flat, Electrical.

SSi970 - Uasher, Flat, for Hood.

AN975 Masher-Taper Pin.

(Copies of specifications. standards, drawings and publications required by contmctom in connectionwith specific procurement functions should be obtained frun the procuring activity or ●s directed by thecontracting officer. )

2.2 Other Publications. The follouing doc~nts form a part of this standard to the ●xtent specifiedherein. Unless otherwise indicated, the issue tn ●ffect on date of invitation for bids or mq~t forProposal shall apply.

AEROSPACE INDUSTRIES iUSDCIATl@I OF AMERICA, INt. (AIA)

NATIONAL AEROSPACE STANOAROS

NAS39!3

NAS513

NAS549

NAS620

NAS 1099 .

NAS? ?69

NAS1197

NAS1252

NAs140\

NAS1515

MAS?587

NA51636

Uasher-Flush Type Ffnishing.

Masher-Rod End Locking.

bldSher, Nonmetallic-insulating, E~(?CtfiU~.

Udsher, Flat-Reduced Outside Dia~ter.

blasher-Bevel 9-1/2°.

Masher, Dimpled, I@.

Uasher - 50S2 Alundnun Alloy.

Masher - 7075 Aluminm Alloy Flat.

UdSher, Radius.

Uashers-Plastic and Synthetic Rubber.

Masher Plain and CSK, 12000F.

Uasher, Key, Dual Tab.

(~pilcat~on for copies should be addressed to the Aerospace Industries Assocfatlon of-rica, Inc.,1725 De Sales Street, N.N., Washington, ~ ZOOM.)

3. OEflNITIUtS

3.1 ~ted lndu~try Standards. Any lndust~ Specification or Standard which is ?fsted In the ~par~ntof &fen\c I_n_dexof Specifications and Standards (DODISS).

3.2 Qmnodity Ty w Oocunent. A ~oc~nt which lists preferred parts within a Federal SUPPIY ClaSSfffCatiOnclass or Item Nan. This document is to be used for selecting preferred parts for a neu desfgn when the docu-ment 1s invoked as a contractual requirwmnt in conjunction with a parts control ~uireaamt.

3.3 End Use Type Oocment. A docwnt that lists pwferred documnts and establishes parts requir~ntswhich am contractually bi ndlng for the design and construction/xanufactum of ● ueapm sfite9 or an ●stab-~ished equi~nt category su~ as MIL-ST&]5]50

\,I

, ./3


MIL.sTG1764

31Jmuaq 1980

3.4 Milfta~ Pavts Control AdvlsO~ Group (WCAG) . A Oepartnwnt of Oefense orgmtzation whfch pmfdesadvice to the Mllltary Uepartmmts and rnllitary ccmtractom on the selection of parts in assi9ned ccsmodityclasses, and collects data on nonstandard parts for developing or tiating ~ilita~ specifications ●m!standards.

3.5 Oefinit}ons of approved item names used In this standard are as foil-s:—

Uasher. A perforated piece of metal, leather, or other XQterfa~ Of various Shapes and fonx5. itis usedapri~ as a seat for ● bolt, nut, screw, rivet, or nail to distribute Pressure and to preventen&lse mtlon over m area surrounding a hole; to increase ear resistance in that &ma, and/or to Preventmovement between two parts by means of restraining features creatid by the shape of Its edg~s.

(1) Uasher, Wvel. An I& having a centrally located hole and two fTat bearing surfaces whichare not parallel.

located hol~z)‘asherI Flnishtnq.An item that Is flush flanged and of a cone ordlsk shape with a centrally

(3) Washer, Flat. h ttem with a centrally located hole, ● solid (not laminated) cress-sectionand two flat parallel bearing surfaces. The flat parallel bearing surfaces may have ● rough ornachfnefinish, or a spectfied surface designation between 32 and 125 mlcrcdnch arittvnetfcal average (M) if requiredfor specified high toque wrenchtng requirements, but mst not have any of the following conditions: visibleor detectable means of lubrication; grooves; indentations or self-lubrication. The dimension of the centrallylocated hole must be 75 perumt of the outside dia~ter or less. The thickness must be 0.006 inch or mom forItms less than 1/4 inch outside dfameter ●nd 0.016 inch ornvme for items with 1/4 inch or more outside dfa*●ter. The thickness shall not ●xc~d 25 percent of the outside diamter or the shortest distance betxdeenperipheral flats. The maximum limit of the tolerance or range applied to the thickness and/or outside diam●ter must be used to determine compliance. 00 not use nominal values.

(4) UdSher, Key. Auasher of nonresilient material usually having two parallel bearin9 surfaces.The outsfde andlor inside edges have one or more protuberances. The ●nds and/or ed9es may be prebent at any.--v. h- &L- k....-dm~ e,tvfs*-c●Ilyic LQ w= -“* 0.., --- ----- ~h~ keY~ nr ]U~S ~Y be f~tted into ke~ays {n adjacent material or they maybe bent over after application to hold or lock one or=xe Items tn place.

(5) Masher, lock. An ttem which fs usually round with ● centrally located hole. lts edges mdtwo bearing surfaces are so designed that applied pressure brfngs into play the spring tension ●ndlor fric-tional lockfng principle whfch materially resists any tendency tcuard turning.

(6) Masher, Recessed. An item round in shape and havfng a centrally located hole. Both bearingsurfaces are parallel and lat. but one or both of the bearing surfaces must be broken by ● cwnte~re,muntemfnk, or simflarly shaped recess.

(7) Masher, Shouldered and Recessed. An Item round tn shape having t centrally located hole. Chebearing surface 3s flat, the other surface is in the fown of a raised boss (shoulder) having a flat bearingsurfdce. Either Or both of the bearing surfaces must be broken by a counte~re, countersink or similarshaped recess. The thickness of the boss must not exued 25 percent of the boss dfaaeter.

(8) Uasher, Spring Tension. A bent sprfngxwtal washer with a centrally located hole. It 1sdesigned to exert pressure axially when assetiled fn place.

Note: Reference must be made to 3.5.a above (the indicated n=), in order to understand the basic conceptwhfch is inhewnt in the total concept of the it~na~s of 3.5.a.(1) thm 3.5.s.(8) ●bove.

4. GENEUAl STATEKNTS

4.1 Selection Pmcedun

4.1.1 Oocsarent Selection. The applicable section shall be selected dfter reviWin9 tk table of c~ten~s.

4.1.2 Part timber Selection (Preliminary). A prelimina~ selectlon of the a plicable part n-r shall bemade after reviewing !nmnnal par~ters (sizes. materials, tensfle st~gth lfsted in the sections.

4.1.3 Part Nwber Selection (Final). A final selection of the applicable part nmber shall be -de afterrevimtfng the detailed mquirenents specified in the referenced washer doc~nts for suitability 10 the par-ticular milftary equipaent being designed (considering the application and ●nvircmmntal conditions).

5. OCTAILED REWIREIENTS

5.1 We dettlled mui-ftts for prefemd washers ●m contained tn the appli-le washer doc-nt ●ndassociated pmcu~t specification. If there is disag~t betueen thencatnal par-tef% listed in titsstandard and the par~ter% specffted in the applicable washer docent or associated pmc~ t specffia-tion, the paraaetem specified in the app~fcable washer docuxent or ●ssociated pmcurmmt Specification shallPfevai 1.

4

.

)


NIL-STO-176431 Jarnmry 1980

6. NOTES

6.1 Dimensions. Dimensions shown in the sections contained herttn are in fnctus.

6.1.1 threfennced dimnsfons are nomml.

CUStOdldnS:Amy - ARNavy - NoneAir Force - 11

RevlewAclJvrtles:Amy-EA,Ml

fiavy-OS&( force - MneDLA - IS

N5

User ActlvlllesArmy - ME

Navy - Ec, SHAl Force-None

Preparing bctlvfty:Air Forte - 11

Agent:OIA-ls

(Project 5310-0904)

‘1

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SECTION 405SAWER, K[Y, FLAT, GEMERAL PURPOSE

APPLICABLE 2UCUMEWT U~l)l

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lABL E t PmIn-OrIs

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91-9?-93

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S[cllon 503WASH[R LOCK INTERNAL TOOTH. FLAT

APPLICA~[ DOCUMENTS MS3S333.M$35334

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TABLE I Pwl numbeis

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f%oteclwt fresh . CAlmIunglalt Pa$sl vale1

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s[cltou 5Q5●A$M[R LOCK ROD[440

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NIL-ST&176431 Jvuary 1900

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A

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SECTION ?0!9Altt[R 5Mou LD[R[D SNo R(C[SS[C OIMPLIO 100

APPLICA8L[ 00 CUUIRT NASI169

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1

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(!94 1)3 -8 -. m a Ta

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)17 m -- 0416[ -- --

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1

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9

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—

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------

—.-

1

,, ..,tems Division (AFSC);

t,, ~I\AFB, OH 45433 POS7ACJE AND FE ES PAIO

[%]

US8MM

Cornn~ander

Aeronautical Systems llivis

ATTN : ASD/ENESS

on (AFSC

. . — ---r


STANDARDIZA~lON DOCUMENT lMP~OVE~EN1’ PROPOSAL I

INSTFl~CTIONS This form IS pro~ided to SOIICIIbeneflcml comments wh]ch may improve this document andenhance IU use DoD contractors. governmen! actlvltles, manufacturers. vendors, or other prospective users of

the documen! are ln~lted to submit comments to the government Fold on )Ines on reverse side. staple in corner,and send to preparing activlt}’ Attach an? pertinent data =hlch may be of use In improwng this document If

there are add)t)onal papers, attach to form and place both in an envelope addre=ed to preparing actwit~ ~

response WIII be provided to the submitter, when name and address IS provided, wlthln 30 days indicating tha!the 1426 wab received and when any appropriate act]on on it will be completed.NOTE This form shall not be used to submit requests for wa]vers, dev]at]ons or clarification of spec~icat]onrequirements on current contracts Comments submitted on th~s form do not constitute or imply authorizationto waive any portion of the referenced document(s) or to amend contractual requirements.

30 CUMENT IDENTIFIER (.Vumbcr) AN OTITLE

!YIL-STD-1764 WMERS, PREFERRED FOR DESIGN, LISTING OF‘dAME OF ORGANIZATION ANO ADDRESS OF SUBMITTER

~ VENOOR ~ uSER ~ MANUFACTURER—.—.

THAS ANY PART OF THE DOCUMENT CREATED PROBLEMS OR REOUI RED INTERPRETATION IN PROCUREMENT

.—

-

)SE? n IS ANY PART OF IT TOO RIGID. RESTRICTIVE LOOSf OR AMBIGUOUS? PLEASE EXPLAIN BELOW

A GIVE PARAGRAPH NUMBER AND WORDING

B RECOMMENDED WORDING CHANGE

c REASON FOR RECOMMENDED CHANGE(SI

REMARKS

‘DATE

DO ‘*M14261OCT 76

EOI~IONOF 1 JAN 72 wl~t. BE USED UNTIL EXHAUSTED


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