Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. इंटरनेट मानक “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “प0रा1 को छोड न’ 5 तरफ” Jawaharlal Nehru “Step Out From the Old to the New” “जान1 का अ+धकार, जी1 का अ+धकार” Mazdoor Kisan Shakti Sangathan “The Right to Information, The Right to Live” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 3727 (1966): Wing Screws [PGD 31: Bolts, Nuts and Fasteners Accessories]
Transcript
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
SHBI B: C~OVINDARAJ Indian Telephone Industries Ltd, Bangalore SEBI D. A. CRELLIAB ( A1ternut.e )
SHBI N. V. HEBALKAB Kirloskar Brothers Ltd, Kirloskarvadi CAL R. JANABDHANAX Ministry of Defence ( R & D )
S-1 B. C. TEADANI ( Alternate ) SHRI B. D. KAPUB All India Manufacturers’ Organization, Bomhay SHBI V. KAPUB Guest, Keen, Williams, Ltd, Calcutta
SEBI DILIP PAUL ( Altmats ) Sirm KABTAB SINGE Directorate General of Supplies & Disposals ( Ministry
of Works & Housing ) SHBI S. S. THAKUB (Alternate)
DE S. P. LQTEICA The Institution of Engineers ( India ), Calcutta SEBI D. MAJU~~DAB Office of the Development Commissioner for Small
Scale Industries ( Ministry of Industry & SUPPlY)
SHBI G. B. JAKETIA ( Altarnate ) Smu S. D. MAJUXDAB National Test House, Calcutta SEBI R. N. MALXJCK Directorate General of Technical Development,
( Minisiry of Industry & Supply ) SHBI R. S. MATHUB Engineering Association of India, Calcutta
Saar I. M. SAKEUJA ( Altemak )
( Continued on page 7 )
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW’DELHI 110002
IS t 3727 - 1966
Indian Standard
SPECIFICATION FOR WING SCREWS
0. FOREWORD
0.1 This Indian Standard was adopted by the Indian Standards Institution oti 1 September 1966, after the draft finalized by the Screw Threads and Fasteners Sectional Committee had been approved by the Mechanical Engineering Division Council.
0.2 Wing screws are extensive1 y used in light assemblies where convenience of hand tightening is required. They are particularly suited to applica- tions where frequent adjustment or replacement of screws is required. The subject of wing nuts has already been covered in IS : 2636-1964*.
0.3 This standard deals with dimensions and materials for wing screws only while reference has been made to IS : 1367-19611_ which gives details of general requirement for more common types of threaded fasteners.
0.4 In the preparation of this standard, assistance has’ been derived from DIN 316-1956 ‘ Flugelschrauben M2 bis M24 ( Wing screws, M2 to M24 ) ’ issued by the Deutscher Normenausschuss.
0;~ For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, express- ing the result of a test, shall be rounded off in accordance with IS : 2-1960$. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
1. SCOPE
I.1 This standard specifies the requirements for wing screws for sizes M2 to M24.
2. MECHANICAL PROPERTIES
2.1 If made of steel, the wing screws conforming to this standard, shall have mechanical properties corresponding to symbol 4D of IS : 1367-19617.
*Specification for wing nuts.
tTechnica1 supply conditions for threaded fasteners.
$Rules for rounding off numerical values ( r&red).
2
-
Ist3727-1966
2.2 If made of brass, bronze or aluminium, the wing screws shall have a minimum tensile strength of 30 kgf/mm%.
3. GRADE
3.1 The wing screws covered in this standard shall conform to Black ‘B? Grade specified in IS : 1367-1961*.
4. DESIGNATION
4.1 The wing screws covered in this standard shall be designated as follows.
4.1.1 A wing screw of nominal size, M6 length 10 mm of black grade and of steel having mechanical properties corresponding to symbol 4D, shall be designated as
Wing Screw M6 x 10 IS : 3727 -B-4-D
4.1.2 When wing screws are made of brass, aluminium, etc, the symbol 4D shall be replaced by the words ‘ brass ‘, ‘ aluminium ’ etc, as appropriate.
5. DIMENSIONS
5.1 The screw threads dimensions of the wing screws shall have coarse pitches with the normal class of tolerance specified in IS : 1362-1962t.
5.2 The other dimensions of the wing screws shall be as given in Table: 1.
5.3 The length-diameter combination of wing screws shall be as given in Table ‘2.
6. GENERAL REQUIREMENTS
6.1 The wing‘screws conforming to this standard, shall comply with the requirements of IS : 1367-1961*, SO far as manufacture, workmanship, tolerances, marking, packing and tests are concerned.
*Technical supply conditions for threaded fasteners. tDimensions for screw threads for general purposes (diameter range 1.6 to 39 mm )
TABLE 2 LENGTH-DIAMETER COMBINATIONS FOR WING SCREWS
( Clause 5.3 )
All dimensions in mtllimetres.
112 M2.5 M3 M4
x - - -
X X X -
X X X X
X X X X
X X X X
X X X X - - - X - - - -
- - - -
- - - -
- - - -
- - - -
- - - -
_ - -_ -
- - - -
- - - -
NOTE 1 - Sizes marked ‘ X ’ are preferred.
M5
-
-
X
X
X
X
X
X
X -
-
-
-
-
-
-
.M6 ME MI0 Ml2 Ml6 M20 M24
-
-
-
X
X
X
X
X
X
X
-
-
-
-
-
-
- - - -
-
-
_ - - - - - - - _ - - -
X
X
X
X
X
X
X -
-
- - -
- -
X
X
X
X
X
X -
-
- - -
_ - - - - - - - )( - - -
x _-_ -
X x - - X x - - X X x - X X X X
X x - - - X X X - - X X - - - X
NOTE 2 - The maximum and minimum dimensions for length have been rounded off suitably.
IS:372711966
SEBI P. S. NA~ASUNDABAX Directorate of Technical Development & Production ( Air ) ( Ministry of Dcfence )
SE= PBEY PEAKASH National Physical Laboratory ( CSIR ). New Delhi SEBI P. C. JAIN ( Alkmate)
S~st S. RAXAYBITHAY Civil Aviation Directorate ( Ministry of Transport) Sasr P. R. CHANDBASEKHAB ( Al&mate)
SHBI T. S. S. RAO The Cycle Manufacturers’ Association of India, Calcutta
SHBI J. C. BBADLEY ( Affemak ) SEBI V. A. S. &TTY Hindustan Machine Tools Ltd, Bangalore
SEBI M. RANQASHAI ( At&m& ) SHEI S. SHXVANA~A SWAM New Government Electric Factory, Bangalore
SHBIH.F. WA~N~~(&~VIU~C) SHBI M. P. T~IVEDI Jyoti Ltd, Baroda SNBI D. v. VIaMANX Industrial Fasteners Association of India, Calcutta SEBI M. v. PATAKKAB, Director General, IS1 ( Ex-oJicio~h4cmber)
Director ( Mech Engg )
Seiretary S’EBI S. CRANDBABEKHABAN
Deputy Director ( Mcch Engg), ISI
Bolts and Nuts for General Engineering Purposes Subcommittee, EDC 27 : 3
colwnlcr CQL R. JANABDHANAY Ministry of Defence ( R & D )
MOllbarS SEBI B. C. THADANI { Altsrnak to
Co1 R. Janardhanam ) SIIBI S. K. BHATIA Heavy Electricals ( India ) Ltd, Bhopal SEEI HABDAS SINQH Research, . Designs & Standards Organization
( Muustry of Railways ) SERI V. KAPTJB Gurst, Keen, Williams, Ltd, Calcutta
SHRI DILIP PAUL ( &6mal8) REIBEBENTATIVB Engineering Association of India, Calcutta RIPPBSENTATIVB Hindustan Macliine Tools Ltd, Bangalore SEBI R. S. THAPA Forbes Forbes Campbell & Co Ltd. Bombay
SHBI J. P. PALKEIWALA ( Alfcmute)
7
Tr- INDIAN STANDARDS INSTITUTION The Indian Standards Institution (ISI), which started functioning
in 1947, is the national standards organization for India. Its principal object is to prepare standards on national and inter- national basis and promote their general adoption.
The overall control of ISI. which is run and financed jointly as a non-profit making body by the Government and private enterprise, is exercised by the General Council, composed of representatives of Central and State Governments: leading trade, scientific and technological organizations: and subscribing members. The Union Minister of Industry is the ex-officio President of ISI.
The present technical activity of ISI is carried out through 8 Division Councils for Agricultural and Food Products; Chemical; Civil Engineering; Consumer Products: Electrotechnical; Mechanical Engineering: Structural and Metals: and Textile. All technical work relating to the formulation and revision of standards is done by committees appointed by and under the direction’ of their respective Division Councils. These committees consist of experts drawn from manufacturing units, technical institutions, purchase organizations and pther concerned bodies.
To make available benefits of Indian Standards to the common man, ISI has introduced its Certification Marks Scheme under the Indian Standards Institution (Certification Marks) Act, 1952, as amended by the Amendment Act, 1961. According to this Act, quality goods conforming to Indian Standards can carry the ISI Certification Mark. This Mark is a -third-party guarantee of quality of marked goods. Licences to use the ISI Certification Mark are granted to manufacturers using reliable methods of quality control subject to qverall inspection by ISI.
In the international field, ISI represents India on the Inter- national Organization for Standardization (ISO) and the Inter- national Electrotechnical Commission (IEC). IS0 and . IEC respectively link 54 and 4c) countries, and function through I I8 and 58 technical committees: ISI participates in 83 technical committees of IS0 and all the technical committees of IEC. The committees and subcommittees of IEC and IS0 for which ISI holds the secretariat deal with: Electric Fans, Lac, Mica, Pictorial Markings for Handling of Goods, Liquid Flow Measurements in Open Channels, Procedures fsr Inter-conversion of Values, Spices and Condiments, and Stimulants. Ii -. I ____ __.___.- ..- .__.__.____ _... ._. ._ ___ I. .._ -..-.----
BUREAU OF INDIAN STAN.DARDS
tieadguarterss:
Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002
Telephones: 331 01 31, 331 13 75 Telegrams: Manaksanstka ( Common to all Offices). - .’
Regional Offices; Te fephone Central : Manak- Bhavan, 9 Bahadur Shah Zafar Marg,
NEW DELHI 11’0002 331 01 31 331 1375
*Eastern : 1 I14 C. I. T. Scheme VII M, V. I. P. Road, I
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