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Heavy Duty Bolt

The Heavy Duty Bolt, also known throughout the marketplace as the HD Bolt is a shorter efficient blind fixing which provides strength and performance. The HD Bolt is idea when in the shear plane overlaps the legs of a Blind Bolt.

The HD Bolt is the best possible solution when heavy weight steel sections are being fixed. No equipment other than a hammer and a spanner is needed in order to activate the unique pin locking mechanism. This simplicity and convenience is matched by high performance, meaning the Heavy Duty Bolt saves time and money throughout the installation process.

Heavy Duty Bolt Advantages:

  • Easy and speedy installation
  • No oversized hole required
  • 1000 hours of salt spray protection provided by Zinc Flake 1000Hr SSP coating
  • Brings increased efficiency to any assembly work
  • Unique pin locking feature

Visit our News page to take a look at the innovative applications and new products which we develop in response to our clients’ requirements.

If you need Blind Bolt solutions for a planned or ongoing project then please use the contact details below to get in touch with us. We’ll be only too happy just how Blind Bolts could help to save you time and money.

For detailed information on installation, please view our Heavy Duty Bolt Installation guide, Heavy Duty Bolt Fitting Instructions.

Heavy Duty Bolts

HEAVY DUTY BOLT

Technical Details

Heavy Duty Blind Fastener

NOTE: All dimensions are in mm unless stated otherwise.

The Blind Bolt Company reserve the right to change these technical details without notice.

Heavy Duty Product Specification Zinc Flake 1000Hr SSP
(1000 hour Salt Spray Protection)

Product Code
Bolt Size
Hole Diameter Fixing Thickness Depth Clearance

Corrosion Protection
Salt Spray (hours)

Min Max
HD0845ZF M8 x 45 8 7 25 10 Zinc Flake 1000Hr SSP
HD1045ZF M10 x 45 10 7 25 12 Zinc Flake 1000Hr SSP
HD1060ZF M10 x 60 10 7 40 12 Zinc Flake 1000Hr SSP
HD1245ZF M12 x 45 12 8 22 15 Zinc Flake 1000Hr SSP
HD1260ZF M12 x 60 12 8 34 15 Zinc Flake 1000Hr SSP
HD1275ZF M12 x 75 12 8 48 15 Zinc Flake 1000Hr SSP
HD1660ZF M16 x 60 16 12 30 25 Zinc Flake 1000Hr SSP
HD1675ZF M16 x 75 16 12 45 25 Zinc Flake 1000Hr SSP
HD2070ZF M20 x 70 20 15 32 30 Zinc Flake 1000Hr SSP
HD2085ZF M20 x 85 20 15 47 30 Zinc Flake 1000Hr SSP

Design Resistance for HD Type Blind Bolts Design to BS EN 1993-1-8
Zinc Flake 1000Hr SSP HD BOLTS

Bolt Size Tensile (kN) Single Shear (kN) Recommended Pre-load
Tightening Torque (Nm)
M8

8.5

14.1 20
M10 25.2 22.3 35
M12 46.4 32.3 45
M16 57.5 60.1 95
 M20  77.5  94.1  120

Important Note

The above resistances are equally appropriate for designs to BS 5950

Stainless Steel HD Bolts

Heavy Duty Product Specification A4-70 STAINLESS STEEL

Product Code
Bolt Size
Hole Diameter Fixing Thickness Depth Clearance
Min Max
HD0845SS M8 x 45 8 7 25 10
HD1045SS M10 x 45 10 7 25 12
HD1060SS M10 x 60 10 7 40 12
HD1245SS M12 x 45 12 8 22 15
HD1260SS M12 x 60 12 8 37 15
HD1660SS M16 x 60 16 12 30 25
HD2070SS M20 x 70 20 15 32 30

Design Resistance for HD Type Blind Bolts
Design to BS EN 1993-1-8 A4-70 STAINLESS STEEL

Bolt Size Tensile (kN) Shear (kN) Recommended Pre-load
Tightening Torque (Nm)
M8

10.5

12.9 18
M10 20.2 20.0 24
M12 31.4 29.5 30
M16 40.1 41.5 45
M20 68.7 75.2 80

Important Note

The above resistances are equally appropriate for designs to BS 5950

 

HEAVY DUTY BOLT

Testing Data Explained

Heavy Duty Bolt Technical Data

Utilising the unique and innovative HD Bolt system effectively means being fully aware of the way in which the dimensions of the bolt are measured and classified.

These dimensions then play a vital role in meeting the criteria for successful application.

The details of these measurements are set out below and the menu above offers pictorial representations.

If you have any more enquiries regarding the fixing terms, contact us using the details given at the bottom of the page of by clicking here to send an email.

HEAVY DUTY BOLT

Fitting Instructions

The following videos visually represents the detailed installation of the Heavy Duty Bolt.

HD Bolt Installation Instruction

HD Bolt fitting instructions

HD Bolt Installation Instruction (PDF Download)