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the ultimate fixing for major constructions

Excalibur Screwbolts

Updated: 03/12/09Tamperproof - Hexagon Socket Dome (DSA) 8mm

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FURTHER INFORMATION

For additional technical data please call the Sales Desk on
01702 206962 or 01702 207909

 

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Please note: From time to time, materials are changed to improve performance, please check for the latest information.

DSA 8mm Options
Screwbolt Diameter Head Diameter Allen Key size Clearance Hole Diameter Max Fixing Thickness 'A'
Thread Length 'B'
Clearance Depth 'C'
Box Quantity Order code:
8mm 21mm 6mm 10mm 14mm 50mm 16mm 100 DSA 08 / 050
39mm 75mm DSA 08 / 075
Drill Bit Diameter Concrete and Brick 8.0mm
Soft Materials 7.0mm
Ultimate & Safe Load Characteristics based on 3:1 ratio
Material Embedment
Depth
(mm)
Tensile Load kN. Shear Load kN. Max. Torque
Nm. **
Ultimate Safe Ultimate Safe -
Concrete 60 N/mm² 40 20.50 6.83 - - -
60 N/mm² 60 28.50 9.50 25.50 8.50 -
Concrete 30 N/mm² 40 14.60 4.87 - - -
30 N/mm² 60 21.00 7.00 25.50 8.50 -
Engr. Brick 100 N/mm² 45 17.20 5.73 - - -
Semi.Engr. 70 N/mm² 45 12.60 4.20 - - -
Fletton 20 N/mm² 45 8.20 2.73 - - -
Butterly 20 N/mm² 45 3.50 1.17 - - -
Hemelite 3.5 N/mm² 75 6.30 2.10 - - 10
Lignacite 3.5 N/mm² 75 5.00 1.67 - - 10
Topcrete 7.0 N/mm² 75 11.20 3.73 - - 15

**With softer materials, care should be taken not to exceed the maximum recommended torque, as this may result in the de-grading of the matrix.

DSA 8mm  TECHNICAL DATA
Material Boron Steel BS3111/9/2.1.A
Finish Mechanical Zinc as standard, or Zinc & Yellow passivated
Other finishes Other platings & finishes are available to special order subject to quantity
Tensile strength 800N/mm2 Case hardened
Other sizes Other lengths of all diameters are available to special order subject to quantity
Embedment concrete and brick Minimum recommended is 4.5 × bolt diameter
Soft block Minimum recommended is 75mm
Edge distance & spacings For Edge distances between 5 dia. and 10 dia. see reduction factors

All dimensions in millimetres (mm)