Product Description
M5 zinc-plated steel flat penny repair washers, available with 20mm and 25mm external diameters.
These large-diameter flat washers provide a considerably wider bearing surface than conventional M5 flat washers. They help spread clamping loads across a larger area and are useful for securing thin sheet materials, reinforcing mounting points and covering enlarged, worn or damaged holes.
- Nominal fastener size: M5
- Internal diameter: Suitable for M5 metric fasteners
- Available external diameters: 20mm and 25mm
- Available thicknesses: Approximately 1.25mm and 1.5mm
- Material: Steel
- Finish: Zinc plated
- Washer style: Flat penny repair washer
- Manufacturing standard: No DIN number stated
- Alternative names: Repair washer, penny washer, mudguard washer, fender washer and large-diameter flat washer
- Pack sizes available: 1, 5, 10, 20, 50, 100, 250, 500 and 1000
M5 penny repair washers are commonly used for automotive bodywork, panels, brackets, electrical equipment, appliances, roofing, cladding, fabrication, machinery, trailers and general repair work.
The enlarged external diameter spreads the load from an M5 bolt, screw or nut over a wider area than a standard flat washer. This can help reduce localised pressure and lower the risk of a fastener pulling through thin, soft or weakened material.
The 20mm external-diameter washer provides a compact enlarged bearing surface. The larger 25mm option provides additional coverage where increased load spreading or coverage of an enlarged mounting hole is required.
The oversized washer design can also bridge mounting holes that have become worn, distorted or damaged, making these washers suitable for repair and reinforcement applications.
The zinc-plated finish provides a degree of corrosion protection for general indoor use and sheltered outdoor applications. It is not normally recommended for prolonged exposure to marine, coastal or highly corrosive conditions, where stainless steel or a more suitable protective finish may be preferable.
Use with a compatible M5 fastener where the washer hole and manufacturing tolerance provide suitable clearance. The washer should sit flat against the mating surface and be adequately supported across its bearing area.
| A | B | C |
| M5 | 20mm | 1.25mm |
| M5 | 25mm | 1.5mm |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.
