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Due to the Bank Holiday, orders placed before 2:00PM Friday 25th May will be delivered on Tuesday 29th May. Orders placed after this time and over the Bank Holiday weekend will be delivered on Wednesday 30th May.

Excalibur Screwbolt

Excalibur Screwbolt

Excalibur Screwbolt with a Hexagon Head

The Excalibur screw bolt with Hex head is very versatile with a simple and fast installation process.
Giving a close to the edge ability due to its non expanding design, it provides exceptional strength and immediate load capacity in many substrates.
Available in various diameters for all projects, giving a cost effective solution.

Suitable for scaffold, formwork and many other applications. The Excalibur Screwbolt is the market leader in construction fixings

Available on our online shop

Excalibur Hex head screwbolts

HSB 10MM   OPTIONS
Screwbolt Diameter Head Details and Diameter Clearance Hole Diameter Max Fixing Thickness ‘A’ Thread Length ‘B’ Clearance Depth ‘C’ Box Quantity Order code:
10mm 17mm Hex. Drive
Flange Diameter 22mm
12mm 15mm 60mm 20mm 50 HSB 10 / 060
10mm 12mm 30mm 75mm 20mm 50 HSB 10 / 075
10mm 12mm 50mm 100mm 20mm 50 HSB 10 / 100
10mm 12mm 70mm 120mm 20mm 50 HSB 10 / 120
10mm 12mm 100mm 150mm 20mm 50 HSB 10/ 150
Drill Bit Diameter Concrete and Brick 10.0mm
Soft Materials 9.0mm
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 50 29.00 9.67
60 N/mm² 75 48.00 16.00 46.00 15.33
Concrete 35 N/mm² 50 18.80 6.27
35 N/mm² 75 33.40 11.13 46.00 15.33
Engr. Brick 100 N/mm² 45 20.00 6.67
Semi.Engr. 70 N/mm² 45 14.20 4.73
Fletton 20 N/mm² 45 11.60 3.87
Butterly 20 N/mm² 45 3.90 1.30
Hemelite 3.5 N/mm² 75 10.60 3.53 15
Lignacite 3.5 N/mm² 75 9.00 3.00 15
Topcrete 7.0 N/mm² 75 14.00 4.67 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.

HSB 10MM  TECHNICAL DATA
Material Boron Steel BS3111/9/2.1.A
Finish Zinc & Yellow passivated as standard, or mechanical zinc
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

FOR EDGE AND SPACING DISTANCES MINIMUM 5 DIAMETER AND BETWEEN 5-10 DIAMETER SEE REDUCTION FACTORS

 

 

 

HSB 12MM   OPTIONS
Screwbolt Diameter Head Details and Diameter Clearance Hole Diameter Max Fixing Thickness ‘A’ Thread Length ‘B’ Clearance Depth ‘C’ Box Quantity Order code:
12mm 19mm Hex. Drive
Flange dia. 25mm
15mm 20mm 75mm 24mm 50 HSB 12 / 075
12mm 15mm 46mm 100mm 24mm 50 HSB 12 / 100
12mm 15mm 96mm 150mm 24mm 25 HSB 12 / 150
Drill Bit Diameter Concrete and Brick 12.0mm
Soft Materials 11.0mm
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 60 38.70 12.90
60 N/mm² 90 69.00 23.00 59.80 19.93
Concrete 35 N/mm² 60 26.50 8.83
35 N/mm² 90 43.00 14.33 59.80 19.93
Engr. Brick 100 N/mm² 45 20.00 6.67
Semi.Engr. 70 N/mm² 45 15.00 5.00
Fletton 20 N/mm² 45 15.80 5.27
Butterly 20 N/mm² 45 5.10 1.70
Hemelite 3.5 N/mm² 75 12.10 4.03 15
Lignacite 3.5 N/mm²
Topcrete 7.0 N/mm² 75 18.90 6.30 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.

HSB 12MM  TECHNICAL DATA
Material Boron Steel BS3111/9/2.1.A
Finish Zinc & Yellow passivated as standard, or mechanical zinc
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

FOR EDGE AND SPACING DISTANCES MINIMUM 5 DIAMETER AND BETWEEN 5-10 DIAMETER SEE REDUCTION FACTORS

 

 

HSB 16MM   OPTIONS
Screwbolt Diameter Head Details and Diameter Clearance Hole Diameter Max Fixing Thickness ‘A’ Thread Length ‘B’ Clearance Depth ‘C’ Box Quantity Order code:
16mm 24mm Hex Drive.
Flange Diameter 32mm
19mm 28mm 100mm 32mm 25 HSB 16 / 100
16mm 19mm 28mm 120mm 32mm 25 HSB 16 / 120
16mm 19mm 58mm 150mm 32mm 25 HSB 16 / 150
16mm 19mm 158mm 200mm 32mm 25 HSB 16 / 200
Drill Bit Diameter Concrete 16.0mm
HSB 16MM  TECHNICAL DATA
Material Boron Steel BS3111/9/2.1.A
Finish Zinc & Yellow passivated as standard, or mechanical zinc
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

 

Design Tables based on ETAG Approval ETA (11/0259)

Table 1: Mean Ultimate resistance (Nru.m from test results)   
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
  Table 2: Characteristic resistance ( NRk = NRu.m (1-k5%V)   
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
  Table 3: Design Resistance (NRd = NRk/ym)
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
  Table 4:  Recommended Load (Nrec = NRd/y)   
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) hnom120mm hnom170mm
16 20
Minimum thickness of member 165mm 220mm
Minimum edge distance 185mm 180mm
Minimum spacing 240mm 340mm
        
Reduction Factors for Edge distances between 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

More Information

For more information on our Excalibur Screwbolt range and prices, contact a member of our experienced team now:

Email: [email protected]

Tel: + 44 (0) 151 524 2434