Technical Data

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

Thin Wall Bolt testing data
TW Bolts

Thin Wall Bolt Product Specification
Zinc Nickel

Bolt SizeHoleDepthClamping Range (mm)
(Stock Number)Diameter (mm)Clearance (mm)MinMax
TW5ZF-10835210
 5161 38"564"1332"
TW5ZF-16840816
  516"1 916"516"58"
TW6ZF-101035210
  716"1 3⁄8"564"1332"
TW6ZF-161040816
  716"1 916"5⁄16"5⁄8"
TW8ZF-101335816
  916"1 34"564"1332"
TW8ZF-161340816
  916"2"5⁄16"5⁄8"

Design Resistance for TW Type Blind Bolts
Zinc Nickel - In Accordance with AC 437 and AISC 360-10

TW Bolt SizeTension ResistanceShear Resistance
LRFDASDLRFDASD
kNKIPSkNKIPSkNKIPSkNKIPS
TW55.321.243.680.8314.63.289.732.19
TW614.03.169.362.1021.74.8714.53.25
TW822.55.0615.03.3737.98.5225.35.68
TW Bolts Blind Bolt

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

Thin Wall Bolt Product Specification
Stainless Steel A2-70

Bolt SizeHoleDepthClamping Range (mm)
(Stock Number)Diameter (mm)Clearance (mm)MinMax
TW5SS-10835210
 5161 38"564"1332"
TW5SS-16840816
  516"1 916"516"58"
TW6SS-101035210
  716"1 3⁄8"564"1332"
TW6SS-161040816
  716"1 916"5⁄16"5⁄8"
TW8SS-101335816
  916"1 34"564"1332"
TW8SS-161340816
  916"2"5⁄16"5⁄8"

Design Resistance for TW Type Blind Bolts
Stainless Steel - In Accordance with AC 437 and AISC DESIGN GUIDE 27

TW Bolt SizeTension ResistanceShear Resistance
LRFDASDLRFDASD
kNKIPSkNKIPSkNKIPSkNKIPS
TW56.151.384.10.9212.52.828.361.88
TW610.52.367.01.5718.74.2112.52.80
TW818.24.0812.12.7232.67.3421.84.89
Thin Wall Bolt Blind Bolt

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.