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.





