Hex Head High Thread Coarse Thread – c/w Bonded Washer – Stainless Steel

This hex head stainless steel fastener features a coarse thread and an integrated bonded washer, making it ideal for external cladding and composite panel applications where resistance to corrosion and environmental sealing is critical. The bonded washer ensures a secure, weather-tight seal between fastener and material, preventing ingress of moisture. Designed to fasten through insulation into substrates such as timber and cold-rolled steel, the high thread beneath the head maximises support and minimises deformation of the outer sheet. This is especially important in installations requiring aesthetic integrity and performance over time. Recommended for projects where stainless steel fixings are essential to prevent galvanic corrosion with surrounding materials, particularly aluminium or other stainless components.

Additional Information

Part No.	Thread size (mm)	Drilling Capacity (mm)	Min/Max Fixture (mm)	Screw Length (mm)
A2HTCW55085	5.5	1.2 - 4.0	32 - 62	85
A2HTCW55100	5.5	1.2 - 4.0	42 - 72	100
A2HTCW55120	5.5	1.2 - 4.0	57 - 87	120
A2HTCW55130	5.5	1.2 - 4.0	77 - 107	130
A2HTCW55150	5.5	1.2 - 4.0	99 - 127	150
A2HTCW55180	5.5	1.2 - 4.0	127 - 157	180
A2HTCW55200	5.5	1.2 - 4.0	148 - 177	200
A2HTCW55230	5.5	1.2 - 4.0	178 - 207	230