S/S Flat Washers - 7/16 ID x 13/16 OD (10)

The S/S Flat Washers - 7/16 ID x 13/16 OD (10) by ARP represent a critical fastening component for tactical builds, firearms assembly, and field-grade equipment maintenance. These stainless steel washers distribute load evenly across bolt connections, preventing surface damage and loosening caused by vibration—a primary failure point in high-recoil and duty-use platforms. Whether you're assembling an AR platform, securing optic mounts, or building out tactical systems, proper washer selection ensures long-term reliability and prevents costly downtime in the field.

Manufactured from stainless steel, the 7/16-inch inner diameter accommodates standard fasteners while the 13/16-inch outer diameter provides superior load distribution across a wider surface area than undersized washers. Stainless construction resists corrosion and oxidation, making these washers suitable for wet environments, salt exposure, and extended outdoor storage—essential for law enforcement and military field gear. The flat profile maintains a consistent bearing surface that prevents bolt heads and nuts from digging into softer materials like polymer or aluminum receivers, preserving structural integrity over thousands of operating cycles.

Professional armorers, tactical builders, and military personnel rely on quality washers to secure critical connections on rifles, carbines, and accessory rails. The ten-pack quantity makes this an economical choice for inventory stocking or completing multiple builds. These washers work seamlessly with standard SAE and metric fastening systems and are compatible with AR-15 receivers, rail systems, optic mount bases, and field-grade equipment where vibration resistance and corrosion immunity are non-negotiable.