Brand: Automotive Racing Products (ARP)
High-quality steel washers from ARP are a perfect match for ARP SAE Bolt 5-Packs. They are perfect for installing most accessories or even suspension components. The ID is slightly oversized to clear the under-head radius of just about any standard bolt. (Despite their strength, these general-purpose washers should never be used on cylinder head bolts/studs, main caps, or connecting rods.)
This size has a 5/16" nominal ID and a 5/8" OD and measures 0.075" thick (slightly thicker than AN960-516 washers and the old ARP 200-8410 washer). The black oxide finish looks tough and takes paint well. Sold individually.
Note: These washers are not for use on cylinder heads, main bearing caps, or connecting rods!
