Description
M10 Hex Head Screws – 20mm HDG (Box of 100)
These M10 hex head screws with a 20mm length are fully threaded and hot dipped galvanised, making them ideal for outdoor or exposed applications where corrosion resistance is essential. Made from Grade 8.8 steel and compliant with DIN 933 specifications, they deliver dependable strength for structural fixings and channel systems.
Key Specifications:
- Thread Size: M10 Metric
- Length: 20mm
- Thread Pitch: 1.5mm
- Material: Grade 8.8 High Tensile Steel
- Finish: Hot Dipped Galvanised (HDG)
- Hex Head Size (A/F): 17mm
- Thread: Fully Threaded to DIN 933
Important Compatibility Note:
This galvanised bolt range is only compatible with over tapped nuts and channel nuts.
Benefits:
- Engineered for reliable structural fixings
- HDG finish ensures long-term corrosion resistance in outdoor settings
- Suitable for all 41mm Unistrut-type channel systems
- Supplied in a trade box of 100 for efficient stocking and use
Common Applications:
- External steel frameworks and cable support systems
- Channel bracket assemblies and mounting plates
- Heavy-duty pipe clamps, tray fixings, and more
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.



















