1/2in Stepped Head Bolt Washers (30)

The 1/2in Stepped Head Bolt Washers (30) are precision fastener components engineered for firearm assembly, maintenance, and armorer work. Each washer in this 30-piece set features a 0.500-inch inner diameter with a stepped profile designed to seat properly under bolt heads on aluminum and polymer receivers common in modern tactical platforms. Constructed from chromoly steel and finished in black oxide, these washers provide corrosion resistance and professional appearance critical for field-serviceable weapons systems.

Specification-grade construction ensures dimensional consistency: 0.995-inch outer diameter, 0.625-inch insert OD, and 0.190-inch thickness. The stepped geometry distributes clamping force evenly across aluminum heads without marring or concentrating stress, a critical consideration when working with soft-metal components. Chromoly composition provides superior hardness compared to standard mild steel washers, resisting deformation under repeated disassembly cycles—important for warranty-maintained rifles or duty weapons that undergo regular inspection and maintenance.

These washers are essential for armorers, gunsmiths, and serious shooters performing bolt assembly, trigger group installation, or receiver work on rifles and carbines with aluminum receiver components. The 30-count packaging supports full build projects or maintains armorer supplies for ongoing maintenance operations. Black oxide finish provides durability in shop and field environments while maintaining professional standards expected in military and law enforcement maintenance protocols.

Stepped head bolt washers are a foundational component in precision firearm assembly. Understanding proper washer selection—OD sizing, material compatibility with receiver material, and thickness for intended clamping load—separates professional-grade work from improvised repairs. This specification set meets the requirements of standard platform builds and replacement scenarios.