SKU: ARP400-8550
UPC: 672036035181
MPN: 400-8550
ARP stainless steel flat washers in 5/16 ID x .625 OD (10-pack) are versatile fastener components suitable for various applications, including general assembly and fabrication tasks. These washers help distribute clamping load evenly across bolt heads and threaded surfaces, making them a reliable choice for mechanics and fabricators.
Constructed from stainless steel, these flat washers resist corrosion and maintain dimensional stability, which is essential in environments exposed to moisture and corrosive fluids. The 5/16-inch inner diameter accommodates standard 5/16" fasteners, while the .625-inch outer diameter provides a substantial bearing surface, helping to prevent bolt head pull-through.
These washers are ideal for use in various applications, including engine assembly and general fabrication, where consistent performance is required. They are commonly paired with ARP fastener systems, enhancing the reliability of the overall assembly.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.