Channel Support Systems - Standard Fixings & Fastenings
Hexagon Head Setscrews
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Size Size Electroplated zinc M10×40 M6×16 M10×45 M6×20 M10×50 M6×25 M10×60 M6×30 M12×20 M8×20 M12×25 M8×25 M12×30 M8×30 M12×35 M8×35 M12×40 M8×40 M12×50 M8×50 Hot dip galvanised M10×16 M6×12 M10×20 M6×16 M10×25 M6×20 M10×30 M6×35 M10×35
Cone Point Screws (M10×35)
- Type: Electroplated zinc or stainless steel
Hexagon Nuts
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Size Size Electroplated zinc M10 M6 M12 M8 Stainless steel M10 M6 M12 M8 Hot dip galvanised M10 M6 M12 M8
Roofing Nuts and Bolts
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Size Size Electroplated zinc Hot dip galvanised M6×12 M6×12 M6×16 M6×16 M6×20 Stainless steel M6×25 M6×12 M6×30 M6×16 M6×40 M6×20 M6×50
Flat Washers
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Size Size Electroplated zinc Stainless steel M6 M6 M8 M8 M10 M10 M12 M12
Roofing Washers (M6)
- Type: Hot dip galvanised.
Penny Washers
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Size Size Electroplated zinc M6×25 M10×38 M8×25 M12×40
Shakeproof Washers
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Size Size Electroplated zinc M6 M10 M8 M12
Tray Washers (M6×20)
- Type: Electroplated zinc or hot dip galvanised.
Threaded Rod
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Size Size Electroplated zinc Stainless steel M6×3 m M6×3 m M8×3 m M8×3 m M10×3 m M10×3 m M12×3 m M12×3 m
Threaded Rod Connectors
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Size Size Electroplated zinc M6 M10 M8 M12
Eye Bolts
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Size Size Electroplated zinc M6×80 M10×80 M8×80 M12×80
Fastenings
Fastening brackets and supports to channel
Standard fastenings for channel are high tensile hexagon head setscrews to BS 3692-8·8, being zinc plated to BS 3382 : Part 2.
Channel Type | Fitting Thickness(1) | Recommended Fastening(2) |
---|---|---|
Deep channel CC4141 series | 6 mm and 8 mm | M10 or M12 x 35 mm(3) |
5 mm and 6 mm | M10 or M12 x 30 mm | |
Shallow channel CC2121 series | 7 mm and 8 mm | M10 or M12 x 25 mm(3) |
5 mm and 6 mm | M10 or M12 x 20 mm |
(1) Most standard brackets are made from 5 mm gauge steel
(2) The use of too long a fastening will prevent proper tightening because the bolt end will foul the bottom of the channel before the head tightens down on the fitting
(3) When fastening brackets other than channel, longer bolts may be required if the bracket thickness is greater than 8 mm
Fastening tray to supports
Use M6 x 16 mm zinc plated roofing bolts or pan head bolts
Fastening ladder to supports
Use M10 x 16 mm high tensile hexagon head setscrews