Countersunk Washer Blk 1/4in x 1in 50pk

The Countersunk Washer Blk 1/4in x 1in 50pk from ALLSTAR PERFORMANCE is an indispensable fastener pack for serious engine builders, suspension tuners, and fabricators who demand precision hardware. Whether you're assembling a stroker motor, securing custom brackets, or installing aftermarket components, these black countersunk washers sit flush with fastener heads—eliminating protrusions that can snag hoses, wiring harnesses, or accessories. A 50-piece pack ensures you have backup inventory for multiple projects without running short mid-build.

Countersunk washers reduce bearing surface stress by distributing load across a larger footprint under the bolt head, crucial when fastening into aluminum castings or thin sheet metal that can dimple under standard hardware. The 1/4-inch bolt diameter accommodates M6 metric fasteners and common 1/4-20 UNC threads, while the 1-inch outer diameter provides generous load distribution—ideal for engine bay plumbing, intake manifold bolts, and custom welded-tube assemblies. Black oxide finish resists corrosion in damp engine compartments and delivers a professional appearance on show-quality builds.

Fabricators and performance shops favor ALLSTAR PERFORMANCE fasteners for consistency and reliability across high-vibration applications where fastener creep invites catastrophic failure. These washers pair seamlessly with Grade 8 bolts on intake runners, carburetor mounting plates, and custom bracket installations where a clean, flush finish is non-negotiable. At 0.55 lbs for the complete 50-pack, storage is compact—keep a handful in your toolbox for unexpected builds and emergency repairs.