Locking washer WPE-M series

sealingflatstainless steel

Our Stainless Steel Flat Penny Washers, also known as Mudguard Washers or Repair Washers, are manufactured to BS 4320 from high performance stainless steel, which provides an excellent level of resistance and strength across medium to heavy loads. Most commonly used in conjunction with Bolts, Machine Screws and Nuts, these products are used distribute the load of the fasteners over a larger area. We also offer Form A 2XD Washers and 3XD Washers. Our Penny Washers are available in A2 (Equivalent to 304) or A4 (Equivalent to 316 Marine Grade) Stainless Steel in metric sizes from M4 x 12 to M12 x 50. For our full selection of sizes and materials see the product table displayed below, or get in touch with a member of our staff. Key Product Features: Manufactured from a high strength Stainless Steel Recommended for use with threaded components Easy to install and use Often installed on externally threaded components Also Refered to As: Fender Washer Flat Washer Metric Penny Washers What is a penny washer used for? Penny washers, also referred to as repair washers, are washers with a larger diameter than standard flat washers. Their key function is to distribute the clamping force exerted by a bolt or nut over a wider surface area. This serves several purposes: Prevents damage to the material: By distributing the load, penny washers help prevent the bolt or nut head from digging into or pulling through the material, particularly in softer materials like wood or plastic. Creates a tighter seal: The increased surface area can also help create a more secure connection,