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Excalibur Screwbolts

Updated: 22/04/24Excalibur Screwbolt Hexagon Head (HSB) 24mm
Suitable for Non-Cracked Concrete

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FURTHER INFORMATION

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

 
HSB 24mm   Options
Screwbolt Diameter Head Details and Diameter Clearance Hole Diameter Max Fixing Thickness 'A'
 Thread Length 'B'
 Clearance Depth 'C'
 Box Quantity Order code:
24mm 36mm Across Flats
Flange Diameter 50mm 		30.0mm 42mm 150mm 48mm 10 HSB 24 / 150
24mm 30.0mm 92mm 200mm 48mm 10 HSB 24 / 200
24mm 30.0mm 192mm 300mm 70mm 10 HSB 24 / 300
Drill Bit Diameter Concrete
 24.0mm
- -
HSB 24mm  TECHNICAL DATA
Finish Mechanical Zinc as standard
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 Minimum recommended is 4.5 × bolt diameter
Soft block Not recommended for soft block

Design Tables

Table 1: Mean Ultimate resistance (Nru,m from test results)
Anchor Size (mm) 24 24 24 24
Hef nominal (mm) 150 150 250 250
Non-Cracked Concrete C20/25 C50/60 C20/25
 C50/60
Tensile Nru,m [kN] 91.1 142.6 255.5 326.8
Shear Vru,m [kN] 238.6 - 290.3 -


Table 2: Characteristic resistance (Nrk (1-k5%V)
Anchor Size (mm) 24 24 24 24
Hef nominal (mm) 150 150 250 250
Non-Cracked Concrete C20/25 C50/60 C20/25 C50/60
Tensile Nru,m [kN] 69.3 111.0 193.0 269.1
Shear Vru,m [kN] 200.1 - 240.2 -


Table 3: Normalised Resistance (Nrd = Nrk/ (fc/fctest) 0.5)
Anchor Size (mm) 24 24 24 24
Hef nominal (mm) 150 150 250 250
Non-Cracked Concrete C20/25 C50/60 C20/25 C50/60
Tensile Nru,m [kN] 58.6 106.7 163.1 258.6
Shear Vru,m [kN] 169.1 - 203.0 -


Table 4: Design Resistance (Nrd = Nrn / m)
Anchor Size (mm) 24 24 24 24
Hef nominal (mm) 150 150 250 250
Non-Cracked Concrete C20/25 C50/60 C20/25 C50/60
Tensile Nru,m [kN] 32.5 59.3 90.6 143.6
Shear Vru,m [kN] 135.3 - 203.0 -

ymc = 1.8 for concrete failure non-cracked concrete
yms = 1.4 for steel failure in tension
and 1.25 for steel failure in shear
ymp = 1.8 pull-out failure non-cracked concrete

Table 5: Recommended Load (Nrec = Nrd/y)
Anchor Size (mm) 24 24 24 24
Hef nominal (mm) 150 150 250 250
Non-Cracked Concrete C20/25 C50/60 C20/25 C50/60
Tensile Nru,m [kN] 23.2 42.3 64.7 102.6
Shear Vru,m [kN] 96.6 - 116.0 -

  y = 1.4

Edge Reduction Factors
Edge distance (mm) 75 150 225 290
HSB24x200 tension 0.25 0.76 1.00 -
HSB24x200 shear 0.07 0.22 0.65 1.00
Space Reduction Factors
Space (mm) 75 150 225
HSB24x200 tension 0.91 0.93 1.00
HSB24x200 shear 0.61 0.94 0.95 0.61 0.94 0.95

(Linear Interpolation can be used to calculate intermediate reduction factors)

For specific performance test data in Sprayed Concrete Lining, please contact us.