4mm x 40mm Coach Screw (DIN 571) | Marine Grade A4 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £1.77 | £2.12 |
| 50 - 99 | £1.59 | £1.91 |
| 100 - 499 | £1.43 | £1.72 |
| 500 - 999 | £1.22 | £1.46 |
| 1000 + | £0.53 | £0.64 |
£2.12 / each
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Product Specification
| Size | 4mm |
| Length | 40mm |
| Head Height | 2.8mm |
| Thread Length | 24mm |
| Material | A4 Stainless Steel |
| Across Flats | 7mm |
| Shank Diameter | 4mm |
| Standard | DIN 571 |
Frequently Bought Together
Total Price: £0.00
M4 x 40mm Coach Screw DIN 571 | A4 Stainless Steel
For heavier timber fixing work, this M4 x 40mm coach screw offers A4 Stainless Steel construction, a 24mm thread and a 4mm shank diameter to support a firm mechanical hold in prepared timber. The A4 stainless steel finish gives this a4 stainless steel coach screw a focused role in garden sleeper assembly.
Marine grade A4 stainless steel is well suited to wet, coastal and high exposure locations where stronger corrosion resistance is needed around timber frameworks. The dimensions make it easier to match the fixing to brackets, timber members and washers where additional load spread is needed. The compact 4mm diameter is useful where lighter timber members or smaller fittings need a neat hex head fixing.
Common Applications
- Marine-adjacent timber assemblies where the right grade is selected
- Boardwalks, pontoons and external timber fixtures
- Marine-adjacent decking, posts and timber rails
- Replacement of corroded coach bolts or wood screws
M4 x 40mm Coach Screw Dimensions
- Size: 4mm
- Length: 40mm
- Across Flats: 7mm
- Head Height: 2.8mm
- Thread Length: 24mm
- Shank Diameter: 4mm
- Material: A4 Stainless Steel
- Standard: DIN 571
Coach Screw Buying Guide
Use washers where the timber surface needs extra load spread or a cleaner finished appearance. The correct washer can help reduce marking beneath the hex head. Click here to read our coach screws guide.
Browse the complete Coach Screws DIN 571 range and visit our coach screws blog guide for installation guidance.
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