Northern Fasteners
M10 Penny Washers BZP | 25mm OD | Repair Washers | Pack of 100
M10 Penny Washers BZP | 25mm OD | Repair Washers | Pack of 100
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M10 penny washers (also called repair washers or mudguard washers) in Bright Zinc Plated (BZP) mild steel. 25mm outer diameter with 11mm inner hole. Penny washers have a larger outer diameter than standard flat washers, providing better load spreading and grip on surfaces. Pack of 100.
Specifications
- Thread size: M10
- Outer diameter: 25mm
- Inner diameter: 11mm
- Thickness: 1.5mm
- Material: mild steel
- Finish: Bright Zinc Plated (BZP)
- Pack quantity: 100
Suitable for
- Sheet metal fixings
- Vehicle body repair (hence "mudguard washer")
- Cladding, fencing, and general metalwork
- Applications where standard washers are too small
Frequently asked questions
What's the difference between a penny washer and a standard flat washer?
Standard Form A flat washers for M10 have an outer diameter of around 21mm. Penny washers have a 25mm outer diameter — giving a larger bearing surface for the same bolt size. This makes them better for sheet metal and soft materials.
Are these available in HDG for outdoor use?
Yes — see our M10 HDG penny washers for outdoor applications.
Do you stock other sizes?
Yes — browse our full round washer range and all washers.
Delivery
Dispatched within 1 working day. Free delivery on orders over £60.
Complete your order
Northern Fasteners stocks everything you need for a complete, matched assembly. Always pair your fasteners with the same finish throughout — BZP with BZP, HDG with HDG, A4 stainless with A4 stainless — for consistent corrosion protection and a professional result. Browse our full range of hex nuts, washers, threaded rods, and bolt and nut sets to find everything you need.
BZP, HDG or A4 Stainless — which finish do you need?
Choosing the right finish is just as important as choosing the right size. BZP is ideal for indoor and sheltered use. HDG provides heavy-duty corrosion protection for outdoor, structural, and timber applications. A4 Grade 316 Stainless is the choice for marine, coastal, and chemical environments where no rust is acceptable. Read our guide to help you decide.
Why buy from Northern Fasteners?
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Same-day dispatch
Orders placed before 2pm are dispatched the same working day via tracked courier.
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Free delivery over £60
Free standard UK delivery on all orders over £60. Tracked and reliable.
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DIN & ISO standards
All fasteners are manufactured to DIN and ISO standards. Grade 4.8 and 8.8 as standard.
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Trade & domestic
Competitive pricing for both trade buyers and domestic projects. No minimum order.
Free delivery over £60 — same-day dispatch
Orders placed before 2pm are dispatched the same working day. Spend over £60 and get free standard UK delivery via tracked courier. All our fasteners are manufactured to DIN and ISO standards — properly graded, reliably finished, and competitively priced for trade and domestic buyers alike.
Also need mild steel?
We stock a full range of structural mild steel sections alongside our fasteners — angle iron, box section, flat bar, tube, round bar, and more. Whether you're building a gate, a frame, or a fabrication project, we have the steel and the fasteners to go with it, all in one order.