Updated: 01/07/12Excalibur Screwbolt Hexagon Head (HSB) 20mm
Suitable for Cracked and Uncracked Concrete
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FURTHER INFORMATION
For additional technical data please call the Sales Desk on
01702 206962 or 01702 207909
Please note: From time to time, materials and specifications are changed to improve performance, please check for the latest information.
Screwbolt Diameter | Head Details and Diameter | Clearance Hole Diameter | Max Fixing Thickness 'A' |
Thread Length 'B' |
Clearance Depth 'C' |
Box Quantity | Order code: |
---|---|---|---|---|---|---|---|
20mm | 30mm Across Flats Flange Diameter 40mm |
23.0mm | 28mm | 100mm | 40mm | 20 | HSB 20 / 100 |
20mm | 23.0mm | 58mm | 150mm | 40mm | 20 | HSB 20 / 150 | |
20mm | 23.0mm | 158mm | 200mm | 40mm | 10 | HSB 20 / 200 | |
20mm | 23.0mm | 258mm | 300mm | 60mm | 10 | HSB 20 / 300 |
Drill Bit Diameter | Concrete |
20.0mm |
- | - |
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 | Not recommended for soft block |
Design Tables based on ETAG Approval (11/0259)
Anchor Size (mm) | 16 | 16 | 20 | 20 | 20 | 20 |
Hef nominal (mm) | 120 | 120 | 170 | 170 | 250 | 250 |
Non-Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile Nru,m [kN] | 44.30 | 74.60 | 82.90 | 121.75 | 206.40 | 223.56 |
Shear Vru,m [kN] | 94.00 | 94.00 | 155.40 | 155.40 | 155.40 | 155.40 |
Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile Nru,m [kN] | 31.80 | 43.84 | 44.60 | 79.37 | NT | NT |
Shear Vru,m [kN] | 94.00 | 94.00 | 155.40 | 155.40 | NT | NT |
Anchor Size (mm) | 16 | 16 | 20 | 20 | 20 | 20 |
Hef nominal (mm) | 120 | 120 | 170 | 170 | 250 | 250 |
Non-Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile NRk [kN] | 32.30 | 54.30 | 40.60 | 92.77 | 143.70 | 171.18 |
Shear VRk [kN] | 91.70 | 91.70 | 139.50 | 139.50 | 139.50 | 139.50 |
Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile NRk [kN] | 19.90 | 21.48 | 26.40 | 38.89 | NT | NT |
Shear VRk [kN] | 91.70 | 91.70 | 139.50 | 139.50 | NT | NT |
Anchor Size (mm) | 16 | 16 | 20 | 20 | 20 | 20 |
Hef nominal (mm) | 120 | 120 | 170 | 170 | 250 | 250 |
Non-Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile NRd [kN] | 17.90 | 30.16 | 22.60 | 51.53 | 79.90 | 95.10 |
Shear VRd [kN] | 73.30 | 73.30 | 111.60 | 111.60 | 111.60 | 111.60 |
Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile NRd [kN] | 9.95 | 10.74 | 13.20 | 19.45 | NT | NT |
Shear VRd [kN] | 73.30 | 73.30 | 111.60 | 111.60 | NT | NT |
Anchor Size (mm) | 16 | 16 | 20 | 20 | 20 | 20 |
Hef nominal (mm) | 120 | 120 | 170 | 170 | 250 | 250 |
Non-Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile Nrec [kN] | 12.80 | 21.54 | 16.14 | 36.80 | 57.07 | 67.92 |
Shear Vrec [kN] | 52.40 | 52.40 | 79.70 | 79.70 | 79.70 | 79.70 |
Cracked Concrete | C20/25 | C50/60 | C20/25 | C50/60 | C20/25 | C50/60 |
Tensile Nrec [kN] | 7.10 | 7.70 | 9.40 | 13.90 | NT | NT |
Shear Vrec [kN] | 52.40 | 52.40 | 79.70 | 79.70 | NT | NT |
NT = Not Tested
Revised October 6th 2014 (shear values extended)
Minimum thickness of concrete member, minimum spacing and minimum edge distance for cracked and non-cracked concrete (without reduction factors) | ||
Anchor size (mm) | hnom 120mm | hnom 170mm |
16 | 20 | |
Minimum thickness of member | 165mm | 220mm |
Minimum edge distance | 185mm | 180mm |
Minimum spacing | 240mm | 340mm |
Reduction Factors for Edge distances beween 5 x diameter and 10 x diameter | |||||
---|---|---|---|---|---|
Edge distance | 80 | 100 | 120 | 140 | 160 |
M16 anchors in tension | 0.70 | 0.78 | 0.87 | 0.96 | 1.00 |
M16 anchors in shear | 0.32 | 0.52 | 0.71 | 0.90 | 1.00 |
Reduction Factors for Edge distances between 5 x diameter and 10 x diameter | ||||||
---|---|---|---|---|---|---|
Edge distance | 100 | 120 | 140 | 160 | 180 | 200 |
M20 anchors in tension | 0.75 | 0.82 | 0.89 | 0.92 | 0.96 | 1.00 |
M20 anchors in shear | 0.32 | 0.52 | 0.71 | 0.80 | 0.90 | 1.00 |
Factors for Space reduction in Tension | ||||||
Space (mm) | 80 | 110 | 140 | 170 | 210 | 240 |
M16 anchors | 0.75 | 0.80 | 0.85 | 0.90 | 0.95 | 1.00 |
Space (mm) | 100 | 150 | 200 | 250 | 300 | 340 |
M20 anchors | 0.70 | 0.76 | 0.82 | 0.88 | 0.94 | 1.00 |
Increasing factors for cracked and non-cracked concrete | ||||||
M16 | M20 | |||||
C30/37 | 1.22 | 1.22 | ||||
C40/50 | 1.41 | 1.41 | ||||
C50/60 | 1.55 | 1.55 |