M12 (13.5mm) x 44mm Wood Construction Washer - DIN 440R | Marine Grade A4 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 99 | £0.62 | £0.75 |
| 100 - 499 | £0.57 | £0.68 |
| 500 - 999 | £0.45 | £0.54 |
| 1000 - 9999 | £0.41 | £0.49 |
| 10000 + | £0.38 | £0.46 |
£0.75 / each
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Product Specification
| Size | M12 |
| Internal Diameter | 13.5mm |
| Outside Diameter | 44.0mm |
| Thickness | 4.00mm |
| Standard | DIN 440R |
| Material | A4 Stainless Steel |
Frequently Bought Together
Total Price: £0.00
M12 Wood Construction Washer - 13.5mm ID x 44mm OD | DIN 440R | A4 Stainless Steel
Designed for coastal timber structures and exposed outdoor joinery, this DIN 440R washer provides a larger contact area than a standard flat washer. Manufactured from A4 Stainless Steel to DIN 440R, it helps distribute fastener load across the timber and reduce the risk of bolt heads or nuts pulling into softer wood. The A4 marine-grade material is particularly suited to coastal, marine and high-moisture timber applications where enhanced corrosion resistance is required.
What Are Wood Construction Washers?
Large Flat Washers for timber are used where softer materials need extra support around a bolted connection. By increasing the contact area around the fastener, the washer helps protect the timber surface and maintain a more stable structural joint.
Common Applications
- Retaining Structures: Helps spread clamping force in heavy timber walls, sleepers and structural support projects.
- Beam and Post Connections: Reduces local crushing around bolted joints in timber beams, posts and support structures.
- Timber Frame Construction: Spreads bolt or coach screw load across beams, posts and joists to support stronger structural joints.
- Fencing and Gates: Provides additional bearing area around bolts used in timber posts, rails and gate assemblies.
M12 DIN 440R Wood Construction Washer Dimensions
- Size: M12
- Internal Diameter: 13.5mm
- Outside Diameter: 44.0mm
- Thickness: 4.00mm
- Material: A4 Stainless Steel
- Standard: DIN 440R
Key Benefits
- 4.00mm thickness provides the specified washer section for this size.
- DIN 440R manufacture provides the recognised dimensional standard for this washer type.
- Suitable for use beneath compatible bolt heads or nuts in timber framing and structural joinery.
- M12 size provides the stated fastener reference for the washer.
Compare more sizes in our Wood Construction Washer range for different timber fasteners and structural applications. If you are unsure which size or grade you need, contact our team on 01233 713581.
Fri 8.30 am - 3.30 pm
