Technical Data

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NOTE: All dimensions are in mm unless stated otherwise.

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

Blind Bolt Technical Data

Blind Bolt Product Specification Geomet 500B - Property Class 10.9

Bolt SizeBoxHoleFixing thicknessAnchorDepthMinimum
(Stock Number)QtyDiameterMinMaxClearanceClearanceHole Centres
M8 x 50
509924192520
BB0850DTASM 1132"2364"1516"34"6364"2532"
M10 x 60
40111030233020
BB1060DTASM 716"2564"1 316"2932"316"2532"
M10 x95
20112565233020
BB1095DTASM 716"6364"2 916"2932"1 316"2532"
M10 x 130
201155100233020
BB10130DTASM 716"2 1164"3 1516"2932"1 316"2532"
M12 x 70
20131235263525
BB1270DTASM 12"1532"1 38"1 132"1 38"6364"
M12 x 120
25133085263525
BB12120DTASM 12"1 216"3 1132"1 132"1 38"6364"
M12 x 180
201380140263525
BB12180DTASM 12"3 532"5 23⁄64"1 132"1 38"6364"
M14 x 75*2014.51435323832
GBB1475DTASM 9/16"9/16"1 1/8"
1 1/4"1 1/2"1 1/4"
M14 x 125* 2014.52882323832
GBB14125DTASM
9/16"
1 1/8"3 1/4"1 1/4"1 1/2"1 1/4"
M14 x 185*2014.575142323832
GBB14185DTASM
9/16"3"5 1/2"1 1/4"1 1/2"1 1/4"
M16 x 90*
20171343364335
GBB1690DTASM 1116"3364"1 1164"1 2764"1 1116"1 38"
M16 x 130*
15174075364335
GBB16130DTASM 1116"1 2764"2 6164"1 2764"1 1116"1 38"
M16 x 180*
101755125364335
GBB16180DTASM 1116"2 1164"4 5964"1 2764"1 1116"1 38"
M20 x 110*
10222156445648
GBB20110DTASM 1316"5364"2 1364"1 4764"2 1316"1 5764"
M20 x 140*
8222186445648
GBB20140DTASM 1316"5364"3 2564"1 4764"2 1364"1 5764"
M20 x 180*
102280120445648
GBB20180DTASM 1316"3 532"4 2332"1 4764"2 1364"1 5764"
M20 x 250*
1022130185445648
GBB20250DTASM 1316"5 18"7 932"1 4764"2 1364"1 5764"
M24 x 130*
5262166536460
GBB24130DTASM 1 "5364"2 1932"2 332"2 3364"2 2364"
M30 x 140*
5322760657275
GBB30140DTASM 1 14"1 116"2 2364"2 916"2 5364"2 6164"
Carbon Steel Blind Bolt Design to AISC 360-10
Diameter
inch (mm)
Tensile Strength
(kips) 
Shear Strength Over
Slot (kips)   
Shear Strength Over
Threads (kips) 
Recommended Tightening Torque (lbf)
 RnlΩΦRnRnlΩΦRnRnlΩΦRn 
 ASDLRFDASDLRFDASDLRFD 
0.345 (8) 0.971.461.47 2.20 2.30 3.4511
0.394 (10)1.822.732.513.763.675.5118
0.472 (12) 2.643.963.47 5.21 5.33 8.0022
0.551 (14)3.685.524.827.237.2810.9228
0.630 (16)5.648.466.810.209.9214.8736
0.787 (20)8.1212.1910.0315.0515.4923.2448
0.945 (24)11.5717.3513.8920.8422.3133.4655
1.181 (30)19.0128.5221.7132.5635.5053.2563

In bearing, the resistance of a blind bolt should satisfy the requirements of AISC specification 360-10 clause J3-10, expressions J3-6a or J3-6b as required, using the nominal diameter d, of the bolt. No reduction in diameter to allow for the slot is required.

In combined tension and shear, blind bolts should satisfy the following expressions:

where:

Ft,Ed and Fv,Ed are the applied tension and shear forces respectively (LRFD or ASD values) ØRnt and Rnt /Ω are the design tension resistance (LRFD or ASD), from the above table. ØRnv and Rnv /Ω are the design shear resistance (LRFD or ASD) from the above table. The above resistances and interaction criteria make no allowance for the deformation or yield of the connected part.

Important Note

The above tension resistances make no allowance for the deformation or yield of the connected parts. An appropriate design model for connections in hollow sections can be found in Joints and Steel Construction: Simple Connections.

Stainless Steel Blind Bolts

Blind Bolt Product Specification Stainless Steel A4-70 

Bolt SizeBoxHoleFixing thicknessAnchorDepthMinimum
(Stock Number)QtyDiameterMinMaxClearanceClearanceHole Centres
M8 x 50
509924192520
BB0850A4ASM 1132"2364"1516"34"6364"2532"
M10 x 60
40111030233020
BB1060A4ASM 716"2564"1 316"2932"316"2532"
M12 x 90
20131255263525
BB1290A4ASM 12"1532"1164"1 132"1 38"6364"
M16 x 100*
20171353364335
GBB16100A4ASM 1116"3364"2 364"1 2764"1 1116"1 38"
Stainless Steel Blind Bolt - Design to AISC Design Guide 27
Diameter
inch (mm)
Tensile Strength
(kips) 
Shear Strength Over
Slot (kips)   
Shear Strength Over
Threads (kips) 
Recommended Tightening Torque (lbf)
 RnlΩΦRnRnlΩΦRnRnlΩΦRn 
 ASDLRFDASDLRFDASDLRFD 
0.345 (8) 1.151.371.00 1.51 1.58 2.3811
0.394 (10)2.143.211.712.572.513.7616
0.472 (12)3.124.682.383.563.655.4720
0.630 (16)6.529.739.736.976.7910.1933

For bearing in carbon steel elements, the resistance of a stainless steel blind bolt should satisfy the requirements of AISC specification 360-10 clause J3-10, expressions J3-6a or J3-6b as required, using the nominal diameter d, of the bolt. No reduction in diameter to allow for the slot is required.

The bolt should satisfy the requirements of AISC Design Guide 27, section 9.3.6, expressions 9-1 or 9-4 as required, using the nominal diameter d, of the bolt. No reduction in diameter to allow for the slot is required. It may be assumed that for the common grade of austenitic stainless steel, Fu = 515 N/mm2 (75 ksi).

In combined tension and shear, stainless steel blind bolts should satisfy the following expressions:

 

where:

Ft,Ed and Fv,Ed are the applied tension and shear forces respectively (LRFD or ASD values) ØRnt and Rnt /Ω are the design tension resistance (LRFD or ASD), from the above table.ØRnv and Rnv /Ω are the design shear resistance (LRFD or ASD) from the above table. The above resistances and interaction criteria make no allowance for the deformation or yield of the connected part.

Important Note

The above resistances and interaction criteria make no allowance for the deformation or yield of the connected part.