The Hollo-Bolt collar and head of the Grade 8.8 bolt

are evident above the surface of the steel section.

Corrosion Resistance Options & Sizes Hex Head Countersunk Flush Fit

Bright Zinc Plated & JS500 3 3 3

Hot Dip Galvanised 3

Sheraplex 3 3 3

Stainless Steel (Grade 316) 3 3 3

HEXAGONAL

THE HOLLO-BOLT RANGE

For minimal visible protrusion, the countersunk head

features a Grade 10.9 bolt with a special collar to

accommodate the entire head so that drilling

countersunk holes is not necessary.

COUNTERSUNK (HEAD)

For zero visible protrusion, the innovative Flush Fit

Hollo-Bolt is entirely concealed within the countersunk

hole once installed, a perfect solution for architects!

FLUSH FIT

1. Align pre-drilled fixture and section and insert Hollo-Bolt .

2. Grip the Hollo-Bolt collar with an open ended spanner.

3. Using a torque wrench, tighten the central bolt to recommended torque.

SIMPLE HOLLO-BOLT INSTALLATION

The Hollo-Bolt eliminates the need for conventional through-bolting or welding

of structural hollow section (SHS) or any steel structure where access is only

available from one side.

For SHS & other hollow sections

Aesthetically pleasing connections

No need to weld, no hot work permits

xHigh resistance to shear and tension

Various corrosion resistant options

A4 80

Hollo-Bolt (HCF) for 3x Clamping Force

HIGH CLAMPING

FORCE

Lower labour costs

$¢$ ¢$$

¢

Easy to install from just one side

Fast, time saving installation

reasons to use Hollo-Bolt10

4Independently approved

product performance

The Original Expansion Bolt for Structural Steel

Hollo-Bolt®

by

Visit the website: www.hollo-bolt.com

Load

(kN

)

M20: Connection Load Vs Ply Displacement

Displacement (mm)

00

20

40

60

80

100

120

140

0.25

Clam

ping

For

ce (

kN)

0

0

10

20

30

40

50

60

Time (minutes)

M20: Up to 3.5x Clamping Force

70

20 40 60 80 100 120

Hollo-Bolt sizes M16 and M20 are optimised for structural connections and feature a patented High Clamping Force (HCF)

Mechanism. This mechanism allows the Hollo-Bolt (HCF) to produce a typical clamping force over three times higher than the

same sized product without the mechanism. The increased clamping force results in a more secure connection, as a greater

force has to be overcome before displacement begins.

Connecting the barrel-vault roof using Hollo-Bolt Hexagonal

APPLICATION

Philadelphia, PA, USA

LOCATION

CASE STUDY 1: KIMMEL CENTER

CLOSE UP

HIGH CLAMPING

FORCEHOLLO-BOLT (HCF) for Structural Connections

High Clamping Force (HCF) mechanism

> Hot Dip Galvanised, Size 2With HCF Mechanism 5-Part Design

Without HCF Mechanism 3-Part Design> Hot Dip Galvanised, Size 2

SHS connections for the floodlighting frame

APPLICATION

Scottsdale, AZ, USA

LOCATION

CASE STUDY 2: SALT RIVER FIELDS STADIUM

CLOSE UP

HIGH CLAMPING

FORCE

Hollo-Bolt (HCF) used

Safe Working Load

0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3

Visit the website: www.hollo-bolt.comHollo-Bolt®

by

Lindapter International Lindsay House, Brackenbeck Road, Bradford, West Yorkshire BD7 2NF

Tel: +44 (0) 1274 521444 | e-mail: enquiries@lindapter.com | Web: www.lindapter.com