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    Technical Data

    Blind Bolt Technical Data

Blind Bolt 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 Product Specification
Geomet 500B - Grade 10.9
Product Code Bolt Size Box
Qty
Hole
Diameter
Fixing Thickness
Min Max
Anchor
Clearance
Depth
Clearance
Minimum
Hole Centers
 
BB0850DTASM M8 x 50 50 9 9 24 19 25 20
BB1060DTASM M10 x 60 40 11 10 30 23 30 20
BB1095DTASM M10 x 95 20 11 25 65 23 30 20
BB10130DTASM M10 x 130 20 11 55 100 23 30 20
BB1270DTASM M12 x 70 20 13 12 35 26 35 25
BB12120DTASM M12 x 120 25 13 30 85 26 35 25
BB12180DTASM M12 x 180 20 13 80 140 26 35 25
GBB1690DTASM M16 x 90* 20 17 13 43 36 43 35
GBB16130DTASM M16 x 130* 15 17 40 75 36 43 35
GBB16180DTASM M16 x 180* 10 17 55 125 36 43 35
GBB20110DTASM M20 x 110* 10 22 21 56 44 56 48
GBB20140DTASM M20 x 140* 8 22 21 86 44 56 48
GBB20180DTASM M20 x 180* 10 22 80 120 44 56 48
GBB20250DTASM M20 x 250* 10 22 130 185 44 56 48
GBB24130DTASM M24 x 130* 5 26 21 66 53 64 60
GBB30140DTASM M30 x 140* 5 32 27 60 65 72 75
 
* We strongly recommend the use of our safety gauges when installing these bolts


Important Note

The below 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 in Steel Construction: Simple Connections.
Scireport                  Scireport                  geomet-dl


High Tensile Geomet 500B Blind Bolt
Design to BS 5950-1
Diameter Tension Capacity
Pt (kN)
Shear Capacity
Over Thread
Ps, thread (kN)
Shear Capacity Over Slot
Ps, slot (kN)
Bearing Capacity
in 10mm Plate
S275
Pb, (kN)
S355
Pb, (kN)
 
M 8 6.9 14.6 9.3 20.7 24.8
M 10 12.9 23.2 15.9 27.6 33.0
M 12 18.8 33.7 22.0 32.2 38.5
M 16 40.2 62.7 42.9 46.0 55.0
M 20 57.9 97.9 63.4 55.2 66.0
M 24 82.4 141.0 87.8 64.4 77.0
M 30 123.5 224.0 137.2 80.5 96.3
 
These values are suitable for design to BS 5950-1 and can be used without further reduction for comparison to factored loads. Bearing resistances for different plate thicknesses can be calculated by scaling the values in proportion to the thickness, but should only be used where the distance from the centre line of the hole to the end of the plate is greater than 1.25d.

Combined tension and shear should satisfy the following equation:

Tension Shear -top -SS
Bb1

 

 

High Tensile Geomet 500B  Blind Bolt
Design to BS EN 1993-1-8
Diameter Tension Resistance
Ft, Rd (kN)
Shear Resistance
Over Thread
Fv, Rd  thread (kN)
Shear Resistance
Over Slot
Fv, Rd Slot (kN)
 
M 8 6.9 14.6 11.1
M 10 12.9 23.2 19.0
M 12 18.8 33.7 26.3
M 16 40.1 62.7 51.5
M 20 57.8 97.9 76.1
M 24 82.3 141.0 105.4
M 30 123.3 224.0 164.0
 
These are design values for use with BS EN 1993-1-8, and a partial safety factor of γM2 = 1.25 has already been applied. Bearing resistances should be calculated from BS EN 1993-1-8, Table 3.4, taking d as the nominal diameter of the bolt.

Combined tension and shear should satisfy the following equation:

SS-calc -Bot


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 in Steel Construction: Simple Connections.

Scireport                   Scireport

 

Stainless Steel Blind Bolts


Blind Bolt Product Specification
Stainless Steel A4
Product Code Bolt Size Box
Qty
Hole
Diameter
Fixing Thickness
Min Max
Anchor
Clearance
Depth
Clearance
Minimum
Hole Centers
     
BB0850SS M8 x 50 50 9 9 24 19 25 20
BB1060SS M10 x 60 40 11 10 30 23 30 20
BB1290SS M12 x 90 20 13 12 55 26 35 25
GBB16100SS* M16 x 100 20 17 13 53 36 43 35
 
* We strongly recommend the use of our safety gauges when installing these bolts
Ss1  
Stainless Steel Blind Bolt
Design to BS 5950
Diameter Tension Capacity
Pt (kN)
Shear Capacity
Over Thread
Psthread (kN)
Shear Capacity Over Slot
Psslot (kN)
Bearing Capacity
in 10mm Plate
S275
Pb, (kN)
S355
Pb, (kN)
 
M 8 7.7 10.3 6.5 20.7 24.8
M 10 14.3 16.2 11.1 27.6 33.0
M 12 20.8 23.6 15.4 32.2 38.5
M 16 43.5 44.0 30.1 46.0 55.0
 
These capacities are suitable for design to BS 5950-1 and can be compared directly with factored loads. Bearing resistances for different thicknesses can be 
calculated by scaling the values given in proportion to the thickness, but should only be used when the end distance is greater than 2d.
Bolts subject to combined tension and shear should satisfy the following expression:


Tension Shear -top -SS

 Important Note

Note that the above tension capacities make no allowance for the deformation or yield of the supporting parts.

 

 

Stainless Steel Blind Bolt
Design to BS EN 1993
Diameter Tension Resistance
Ft,Rd (kN)
Shear Resistance
Over Thread
Pv,Rd,thread(kN)
Shear Resistance
Over Slot
Fv,Rd,slot (kN)
Bearing Capacity
in 10mm Plate
S275
Pbs (kN)
S355
Pbs (kN)
 
M 8 7.7 12.3 7.8 65.6 75.2
M 10 14.3 19.5 13.3 82.0 94.0
M 12 20.8 28.3 18.5 98.4 112.8
M 16 43.5 52.8 36.1 131.2 150.4
 
These design resistances are suitable for design to BS EN 1993 and can be compared directly with design loads. The quoted bearing resistances assume
k1 = 2.5 and b = 1.0. For different arrangements the bearing resistance should be calculated using the expression in Table 3.4 of BS EN 1993-1-8,
with d as the nominal diameter of the blind bolt.
Bolts subject to combined tension and shear should satisfy the following expression:


SS-calc -Bot

Important Note

Note that the above tension capacities make no allowance for the deformation or yield of the supporting parts.

 Sci -stainless -download