Black Washer - 1/2 ID x 7/8 OD Chamfer (1)

The Black Washer – 1/2 ID x 7/8 OD Chamfer is a precision fastener component designed for critical applications in firearms assembly, optics mounting, and tactical equipment builds. This compact washer serves as an essential spacer and load-distribution element in high-stress environments where standard hardware cannot tolerate tolerance drift or vibration-induced loosening.

Manufactured to tight tolerances, the Black Washer features a 1/2-inch inner diameter and 7/8-inch outer diameter with a precision chamfered edge that reduces stress concentration and prevents material galling during assembly and disassembly cycles. The chamfer geometry distributes clamping force more uniformly across the contact surface, which is critical when securing optics, rail systems, or internal action components that demand zero play.

This washer integrates seamlessly into AR-pattern rifles, bolt-action builds, and precision pistol platforms where ARP fasteners are specified. Law enforcement armorers and military gunsmiths rely on ARP hardware for consistent performance under repeated cycling and tactical use.