the
Thin Wall Bolt
The Thin Wall (TW) Bolt offers a solution when a blind fixing for lightweight steel sheet or cladding is called for.
The Thin Wall bolt is the perfect combination of performance and convenience. After fitting, the only visible sign is a low profile head with no stud present, and the bolt itself boasts a high shear capacity.
The advantages of the Thin Wall Bolt:
- Installation is quick and simple
- No need to drill an oversized hole
- The zinc electroplate finish offers enhanced durability
- Increased efficiency for any assembly
Take a look at our News page to learn more about the new products and innovative applications we’re always developing. For detailed information on installation or removal, please view our Thin Wall Bolt Installation and removal guide TW Fitting Instructions
If you require solutions for a specific project then please contact us using the details given below. We’ll listen and set out just how using Thin Wall Bolts could help you.
Thin Wall Bolt
Technical Data
NOTE: All dimensions are in mm unless stated otherwise.
The Blind Bolt Company reserve the right to change these technical details without notice.
Thin Wall Bolt Product Specification - Zinc Nickel |
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| PRODUCT CODE |
HOLE DIAMETER |
DEPTH CLEARANCE |
CLAMPING RANGE |
|
| (mm) | (mm) | MIN (mm) | MAX (mm) | |
| TW5ZF-10 | 8 | 35 | 2 | 10 |
| TW5ZF-16 | 8 | 40 | 8 | 16 |
| TW6ZF-10 | 10 | 35 | 2 | 10 |
| TW6ZF-16 | 10 | 40 | 8 | 16 |
| TW8ZF-10 | 13 | 45 | 2 | 10 |
| TW8ZF-16 | 13 | 50 | 8 | 16 |
Design Resistance for TW Type Blind Bolts
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| TW Bolt Size |
Set Screw Diameter (mm) |
Collar Outside Diameter (mm) |
Hole Diameter (mm) |
Shear Resistance (kN) |
Tension Resistance (kN) |
| TW5 | 5 | 7.8 | 8 | 13.2 | 4.8 |
| TW6 | 6 | 9.5 | 10 | 19.5 | 14.1 |
| TW8 | 8 | 12.6 | 13 | 34.5 | 25.6 |
Design resistances in shear and tension are presented above. The resistance values may be compared directly with the ultimate loads applied to the fixing.
The bearing resistance may be calculated in accordance with the design standard, based on the external diameter of the collar, as given above.
Fixings subject to combined shear and tension should be verified in accordance with the design standard, using the design resistances presented above.
If tension is applied to a fixing in a relatively thin wall application, the deformation of the connected material should be considered at serviceability (working loads) and at the ultimate limit state, as deformation is likely to be the limiting feature of the connection.
Design Resistance for TW Type Blind Bolts
|
|
||||
| TW Bolt Size |
Set Screw Diameter (mm) |
Collar Outside Diameter (mm) |
Hole Diameter (mm) |
Shear Resistance (kN) |
Tension Resistance (kN) |
| TW5 | 5 | 7.8 | 8 | 15.9 | 4.8 |
| TW6 | 6 | 9.5 | 10 | 23.4 | 10.1 |
| TW8 | 8 | 12.6 | 13 | 41.4 | 18.4 |
Design resistances in shear and tension are presented above. The resistance values may be compared directly with the ultimate loads applied to the fixing.
The bearing resistance may be calculated in accordance with the design standard, based on the external diameter of the collar, as given above.
Fixings subject to combined shear and tension should be verified in accordance with the design standard, using the design resistances presented above.
If tension is applied to a fixing in a relatively thin wall application, the deformation of the connected material should be considered at serviceability (working loads) and at the ultimate limit state, as deformation is likely to be the limiting feature of the connection.
Stainless Steel Thin Wall Bolts
Thin Wall Bolt Product Specification
|
||||
PRODUCTCODE |
HOLE DIAMETER |
DEPTH CLEARANCE |
CLAMPING RANGE |
|
| (mm) | (mm) | MIN (mm) | MAX (mm) | |
| TW5SS-10 | 8 | 35 | 2 | 10 |
| TW5SS-16 | 8 | 40 | 8 | 16 |
| TW6SS-10 | 10 | 35 | 2 | 10 |
| TW6SS-16 | 10 | 40 | 8 | 16 |
| TW8SS-10 | 13 | 45 | 2 | 10 |
| TW8SS-16 | 13 | 50 | 8 | 16 |
Design Resistance for TW Type Blind Bolts
|
|
||||
| TW Bolt Size |
Set Screw Diameter (mm) |
Collar Outside Diameter (mm) |
Hole Diameter (mm) |
Shear Resistance (kN) |
Tension Resistance (kN) |
| TW5 | 5 | 7.8 | 8 | 11.6 | 7.0 |
| TW6 | 6 | 9.5 | 10 | 17.3 | 9.8 |
| TW8 | 8 | 12.6 | 13 | 30.4 | 17.9 |
Design resistances in shear and tension are presented above. The resistance values may be compared directly with the ultimate loads applied to the fixing.
The bearing resistance may be calculated in accordance with the design standard, based on the external diameter of the collar, as given above.
Fixings subject to combined shear and tension should be verified in accordance with the design standard, using the design resistances presented above.
If tension is applied to a fixing in a relatively thin wall application, the deformation of the connected material should be considered at serviceability (working loads) and at the ultimate limit state, as deformation is likely to be the limiting feature of the connection.
Design Resistance for TW Type Blind Bolts
|
|
||||
| TW Bolt Size |
Set Screw Diameter (mm) |
Collar Outside Diameter (mm) |
Hole Diameter (mm) |
Shear Resistance (kN) |
Tension Resistance (kN) |
| TW5 | 5 | 7.8 | 8 | 14.0 | 5.0 |
| TW6 | 6 | 9.5 | 10 | 20.8 | 7.1 |
| TW8 | 8 | 12.6 | 13 | 36.4 | 12.9 |
Design resistances in shear and tension are presented above. The resistance values may be compared directly with the ultimate loads applied to the fixing.
The bearing resistance may be calculated in accordance with the design standard, based on the external diameter of the collar, as given above.
Fixings subject to combined shear and tension should be verified in accordance with the design standard, using the design resistances presented above.
If tension is applied to a fixing in a relatively thin wall application, the deformation of the connected material should be considered at serviceability (working loads) and at the ultimate limit state, as deformation is likely to be the limiting feature of the connection.
Thin Wall Bolt
Testing Data Explained
The TW Bolt has an innovative and unique design. This means that anyone using them has to be aware of exactly how the dimensions of the bolts are measured, and the way in which these measurements are used during fitting.
The image above shows a pictorial representation of these measurements, with the details set out below.
If you have further questions on the fixing terms of Thin Wall Bolts please get in touch with us.
Use the contact details at the bottom of the page or click here to send us an email.
Thin Wall Bolt
Fitting Instructions
Installations & Removal Videos
The following videos visually represents the detailed installation of the Thin Wall Bolt.
Thin Wall Bolt
SCI Report
