HT170 29BW
£36.79
PER 100
Use for fixing 135mm and 137mm composite panel Rooflights to light steel rail (cold rolled) 1.5mm to 3.5mm.
Use for 115mm and 120mm composite panels to timber
(5.5MM X 170MM 6.3HT 2PT)
Will fix panels 120mm to 140mm trough/valley fix into light steel rails
Will fix panels 100mm to 120mm trough/valley fix into timber
Complete with 29mm Aluminium Bonded Washer
100 in stock
Qty’s in 100’s 1 = 100, 10 = 1000 etc.
8mm (5/16") standard hexagon washer head fastener.
Topfix is not generally recommended. If unavoidable or specified for a particular application a saddle/storm washer should be used and particular care taken in installation.
A 6.3mm diameter coarse thread just under the head stitches the top outer sheet of the composite panel to the head keeping the sheet and washer clamped together giving a typical ultimate resistance force of 1.4kN in normal applications.
See fastener specifications link below.
A minimum 45mm embedment is recommended for HT into timber.
See Composite panel selection chart below.
These fasteners have a minimum 500hr SST coating. Link below.
Use a purpose made screwgun for installation. Cordless drivers and drill drivers are ideal with torque set fairly high on a high speed and in driver mode. Please note: Impact drivers should not be used under any circumstance and automatically voids any warranties.
Figures throughout will be ultimate test results with no safety factors.
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