Description 5.5 x 38mm Heavy Duty Tech Screws with Washer – For Steel Fixing (Box of 100) These 5.5 x 38mm heavy duty tech screws from TIMco offer a robust solution for fixing into heavy section steel. Designed with an EPDM galvanised washer and Ruspert-coated finish, they deliver exceptional corrosion resistance for internal and external applications. Key Features: Size: 5.5mm diameter x 38mm overall length Head: 5.5mm head size, 8mm across flats (A/F) Washer: 16mm EPDM galvanised washer with rubber seal Max Drill Thickness: 12mm Max Clamping Thickness (CT): 15mm Thread Type: Fine self-tapping metric thread Finish: Silver Ruspert coating – rust and corrosion resistant Use: Suitable for both internal and external applications Ideal for: Fixing to steel frames, cladding, and heavy metalwork Pack Size: Box of 100 screws Applications: Heavy-duty metal fixing Steel frame assembly Roofing and cladding installation Ordering & Delivery ✔ Trusted UK Delivery – 95% of orders dispatched within 24 hours Most orders arrive within 1–2 working days as standard. Note: Heavy or bulk orders, as well as any special cut length or non-standard products, may take slightly longer to dispatch. For bulk quantities or trade pricing, please call our team on 0121 270 8507.
