S/S Flat Washers - 3/8 ID x 3/4 OD (1pk)

The S/S Flat Washers - 3/8 ID x 3/4 OD (1pk) are engineered by ARP to provide a professional-grade fastening solution for high-stress mechanical assemblies. Whether you are conducting maintenance on specialized equipment or performing custom modifications, these stainless steel flat washers ensure even load distribution across the mating surface. By preventing bolt heads or nuts from pulling through or marring the substrate, these components maintain the structural integrity of your hardware. Professional builders often seek these specific specifications when looking to buy reliable fasteners that exceed standard hardware store grade expectations.

Constructed from high-strength stainless steel, this ARP 400-8507 flat washer features a polished finish that provides exceptional corrosion resistance in harsh environments. The technical design includes a precision-machined 0.375-inch inside diameter and a 0.75-inch outside diameter to accommodate standard 3/8-inch fasteners perfectly. A notable feature is the chamfered edge, which allows for better clearance and a cleaner fit against the radius of a bolt head. At 0.12 inches thick, these washers offer a substantial bearing surface that minimizes the risk of deformation under high torque loads.

These special-purpose washers are ideal for automotive, marine, or industrial applications where precision and durability are paramount. The polished stainless steel construction ensures they remain aesthetically pleasing while resisting oxidation, making them a top choice for exposed hardware. Users looking for high-performance reviews on ARP hardware will find that these washers offer the tight tolerances required for critical assemblies. This single-pack format allows you to acquire the exact quantity needed for your specific project without unnecessary waste.