USS Flat Washers 5/16 25pk

The USS Flat Washers 5/16 25pk from ALLSTAR PERFORMANCE are essential fastening components designed for tactical equipment assembly, firearms builds, and field maintenance across law enforcement and military applications. These washers distribute load evenly under bolt heads and nuts, preventing fastener pull-through on soft materials and protecting finished surfaces—a critical consideration when securing optic mounts, handguard systems, or carrier plate attachments where surface integrity directly impacts equipment reliability and aesthetic finish.

USS (United States Standard) flat washers at 5/16-inch diameter are precision-engineered to meet ASTM F844 specifications, featuring a flat profile that seats uniformly against irregular surfaces common in tactical gear assembly. The 25-pack quantity provides sufficient inventory for multiple firearms builds or equipment maintenance cycles without requiring reorders for standard projects. Their compact footprint—measuring 2.2 x 0.85 x 4.15 inches for the entire pack—makes them portable for armorer kits and field repair bags, while the 0.34-pound weight ensures negligible load addition to tactical loadouts or maintenance supplies.

Operators, armorers, and military personnel benefit most from bulk USS flat washer packs when standardizing fastener inventory across multiple platforms or maintaining compliance with original equipment specifications. These washers are compatible with all 5/16-inch bolts and studs used in AR platform accessory rails, Picatinny mounting systems, and body armor plate carrier frames. Installation is straightforward—simply place the washer between the bolt head or nut and the mounting surface to distribute clamping force evenly, reducing risk of deformation on aluminum receivers, polymer components, or anodized finishes that characterize modern tactical equipment.