Hollo Bolt
The Hollo-Bolt eliminates the need for conventional through-bolting or welding of structural hollow section or ant steel structures where access is only available from one side.
Suitable for hollow sections, tubes and where access is available from one side only. The Hollo-Bolt is continuously developed to meet the requirements of Structural Engineers, with recent performance improvements including the patented High Clamping Force (HCF) version. The Hollo-Bolt is protected by multiple international patents and registered designs.
Available Sizes
Product Code
HB08-1
HB08-2
HB08-3
HB10-1
HB10-2
HB10-3
HB12-1
HB12-2
HB12-3
HB16-1
HB16-2
HB16-3
HB20-1
HB20-2
HB20-3
Bolt Length
M8 X 50
M8 X 70
M8 X 90
M10 X 55
M10 X 70
M10 X 90
M12 X 60
M12 X 80
M12 X 100
M16 X 75
M16 X 100
M16 X 120
M20 X 90
M20 X 120
M20 X 150
Clamping Thickness
3-22mm
22-41mm
41-60mm
3-22mm
22-41mm
41-60mm
3-25mm
25-47mm
47-69mm
12-29mm
29-50mm
50-71mm
12-34mm
34-60mm
60-86mm
Clearance Hole
14 (+1.0 / -0.2)
14 (+1.0 / -0.2)
14 (+1.0 / -0.2)
18 (+1.0 / -0.2)
18 (+1.0 / -0.2)
18 (+1.0 / -0.2)
20 (+1.0 / -0.2)
20 (+1.0 / -0.2)
20 (+1.0 / -0.2)
26 (+2.0 / -0.2)
26 (+2.0 / -0.2)
26 (+2.0 / -0.2)
33 (+2.0 / -0.2)
33 (+2.0 / -0.2)
33 (+2.0 / -0.2)
Box Quantity
100
100
50
50
50
50
50
50
25
25
25
20
10
10
10
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