Blind 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.
Blind Bolt Product Specification Geomet 500B - Property Class 10.9 | ||||||||
| Bolt Size | Box | Hole | Fixing thickness | Anchor | Depth | Minimum | ||
| (Stock Number) | Qty | Diameter | Min | Max | Clearance | Clearance | Hole Centres | |
| M8 x 50 | 50 | 9 | 9 | 24 | 19 | 25 | 20 | |
| BB0850DTASM | 11⁄32" | 23⁄64" | 15⁄16" | 3⁄4" | 63⁄64" | 25⁄32" | ||
| M10 x 60 | 40 | 11 | 10 | 30 | 23 | 30 | 20 | |
| BB1060DTASM | 7⁄16" | 25⁄64" | 1 3⁄16" | 29⁄32" | 1 3⁄16" | 25⁄32" | ||
| M10 x95 | 20 | 11 | 25 | 65 | 23 | 30 | 20 | |
| BB1095DTASM | 7⁄16" | 63⁄64" | 2 9⁄16" | 29⁄32" | 1 3⁄16" | 25⁄32" | ||
| M10 x 130 | 20 | 11 | 55 | 100 | 23 | 30 | 20 | |
| BB10130DTASM | 7⁄16" | 2 11⁄64" | 3 15⁄16" | 29⁄32" | 1 3⁄16" | 25⁄32" | ||
| M12 x 70 | 20 | 13 | 12 | 35 | 26 | 35 | 25 | |
| BB1270DTASM | 1⁄2" | 15⁄32" | 1 3⁄8" | 1 1⁄32" | 1 3⁄8" | 63⁄64" | ||
| M12 x 120 | 25 | 13 | 30 | 85 | 26 | 35 | 25 | |
| BB12120DTASM | 1⁄2" | 1 2⁄16" | 3 11⁄32" | 1 1⁄32" | 1 3⁄8" | 63⁄64" | ||
| M12 x 180 | 20 | 13 | 80 | 140 | 26 | 35 | 25 | |
| BB12180DTASM | 1⁄2" | 3 5⁄32" | 5 23⁄64" | 1 1⁄32" | 1 3⁄8" | 63⁄64" | ||
| M14 x 75* | 20 | 14.5 | 14 | 35 | 32 | 38 | 32 | |
| GBB1475DTASM | 9/16" | 9/16" | 1 1/8" | 1 1/4" | 1 1/2" | 1 1/4" | ||
| M14 x 125* | 20 | 14.5 | 28 | 82 | 32 | 38 | 32 | |
| GBB14125DTASM | 9/16" | 1 1/8" | 3 1/4" | 1 1/4" | 1 1/2" | 1 1/4" | ||
| M14 x 185* | 20 | 14.5 | 75 | 142 | 32 | 38 | 32 | |
| GBB14185DTASM | 9/16" | 3" | 5 1/2" | 1 1/4" | 1 1/2" | 1 1/4" | ||
| M16 x 90* | 20 | 17 | 13 | 43 | 36 | 43 | 35 | |
| GBB1690DTASM | 11⁄16" | 33⁄64" | 1 11⁄64" | 1 27⁄64" | 1 11⁄16" | 1 3⁄8" | ||
| M16 x 130* | 15 | 17 | 40 | 75 | 36 | 43 | 35 | |
| GBB16130DTASM | 11⁄16" | 1 27⁄64" | 2 61⁄64" | 1 27⁄64" | 1 11⁄16" | 1 3⁄8" | ||
| M16 x 180* | 10 | 17 | 55 | 125 | 36 | 43 | 35 | |
| GBB16180DTASM | 11⁄16" | 2 11⁄64" | 4 59⁄64" | 1 27⁄64" | 1 11⁄16" | 1 3⁄8" | ||
| M20 x 110* | 10 | 22 | 21 | 56 | 44 | 56 | 48 | |
| GBB20110DTASM | 13⁄16" | 53⁄64" | 2 13⁄64" | 1 47⁄64" | 2 13⁄16" | 1 57⁄64" | ||
| M20 x 140* | 8 | 22 | 21 | 86 | 44 | 56 | 48 | |
| GBB20140DTASM | 13⁄16" | 53⁄64" | 3 25⁄64" | 1 47⁄64" | 2 13⁄64" | 1 57⁄64" | ||
| M20 x 180* | 10 | 22 | 80 | 120 | 44 | 56 | 48 | |
| GBB20180DTASM | 13⁄16" | 3 5⁄32" | 4 23⁄32" | 1 47⁄64" | 2 13⁄64" | 1 57⁄64" | ||
| M20 x 250* | 10 | 22 | 130 | 185 | 44 | 56 | 48 | |
| GBB20250DTASM | 13⁄16" | 5 1⁄8" | 7 9⁄32" | 1 47⁄64" | 2 13⁄64" | 1 57⁄64" | ||
| M24 x 130* | 5 | 26 | 21 | 66 | 53 | 64 | 60 | |
| GBB24130DTASM | 1 " | 53⁄64" | 2 19⁄32" | 2 3⁄32" | 2 33⁄64" | 2 23⁄64" | ||
| M30 x 140* | 5 | 32 | 27 | 60 | 65 | 72 | 75 | |
| GBB30140DTASM | 1 1⁄4" | 1 1⁄16" | 2 23⁄64" | 2 9⁄16" | 2 53⁄64" | 2 61⁄64" | ||
| 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) | |||
| RnlΩ | ΦRn | RnlΩ | ΦRn | RnlΩ | ΦRn | ||
| ASD | LRFD | ASD | LRFD | ASD | LRFD | ||
| 0.345 (8) | 0.97 | 1.46 | 1.47 | 2.20 | 2.30 | 3.45 | 11 |
| 0.394 (10) | 1.82 | 2.73 | 2.51 | 3.76 | 3.67 | 5.51 | 18 |
| 0.472 (12) | 2.64 | 3.96 | 3.47 | 5.21 | 5.33 | 8.00 | 22 |
| 0.551 (14) | 3.68 | 5.52 | 4.82 | 7.23 | 7.28 | 10.92 | 28 |
| 0.630 (16) | 5.64 | 8.46 | 6.8 | 10.20 | 9.92 | 14.87 | 36 |
| 0.787 (20) | 8.12 | 12.19 | 10.03 | 15.05 | 15.49 | 23.24 | 48 |
| 0.945 (24) | 11.57 | 17.35 | 13.89 | 20.84 | 22.31 | 33.46 | 55 |
| 1.181 (30) | 19.01 | 28.52 | 21.71 | 32.56 | 35.50 | 53.25 | 63 |
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 Size | Box | Hole | Fixing thickness | Anchor | Depth | Minimum | ||
| (Stock Number) | Qty | Diameter | Min | Max | Clearance | Clearance | Hole Centres | |
| M8 x 50 | 50 | 9 | 9 | 24 | 19 | 25 | 20 | |
| BB0850A4ASM | 11⁄32" | 23⁄64" | 15⁄16" | 3⁄4" | 63⁄64" | 25⁄32" | ||
| M10 x 60 | 40 | 11 | 10 | 30 | 23 | 30 | 20 | |
| BB1060A4ASM | 7⁄16" | 25⁄64" | 1 3⁄16" | 29⁄32" | 3⁄16" | 25⁄32" | ||
| M12 x 90 | 20 | 13 | 12 | 55 | 26 | 35 | 25 | |
| BB1290A4ASM | 1⁄2" | 15⁄32" | 2 11⁄64" | 1 1⁄32" | 1 3⁄8" | 63⁄64" | ||
| M16 x 100* | 20 | 17 | 13 | 53 | 36 | 43 | 35 | |
| GBB16100A4ASM | 11⁄16" | 33⁄64" | 2 3⁄64" | 1 27⁄64" | 1 11⁄16" | 1 3⁄8" | ||
| 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) | |||
| RnlΩ | ΦRn | RnlΩ | ΦRn | RnlΩ | ΦRn | ||
| ASD | LRFD | ASD | LRFD | ASD | LRFD | ||
| 0.345 (8) | 1.15 | 1.37 | 1.00 | 1.51 | 1.58 | 2.38 | 11 |
| 0.394 (10) | 2.14 | 3.21 | 1.71 | 2.57 | 2.51 | 3.76 | 16 |
| 0.472 (12) | 3.12 | 4.68 | 2.38 | 3.56 | 3.65 | 5.47 | 20 |
| 0.630 (16) | 6.52 | 9.73 | 9.73 | 6.97 | 6.79 | 10.19 | 33 |
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.