Lock Washers 7/16 25pk

The Lock Washers 7/16 25pk from ALLSTAR PERFORMANCE are essential fastening components designed to prevent loosening and vibration-induced failure in automotive, machinery, and mechanical assembly applications. These split-design lock washers work by creating constant spring tension that resists bolt rotation under shock loads and continuous vibration. Whether you're building a race engine, restoring classic machinery, or maintaining heavy equipment, a quality set of lock washers is non-negotiable for reliable, long-term fastener security.

Each washer in this 25-pack features a 0.438-inch inner diameter (ID) and 0.748-inch outer diameter (OD), engineered to fit standard 7/16-inch fasteners with precision tolerances. The 0.088-inch thickness provides optimal spring pressure without over-constraining bolt threads, and the steel construction with zinc oxide plating delivers corrosion resistance suitable for both indoor and outdoor environments. The split-lock design creates a mechanical wedge action that distributes clamping force evenly across the fastened joint, minimizing stress concentration and extending component life under demanding conditions.

Professionals and enthusiasts rely on ALLSTAR PERFORMANCE lock washers for critical assemblies where fastener integrity cannot be compromised. This 25-pack supplies sufficient inventory for complete engine builds, transmission overhauls, suspension repairs, or general shop maintenance. Simply install one washer under the bolt head or nut before tightening to create a secure, vibration-resistant connection that withstands thermal cycling and mechanical shock. Perfect for high-performance automotive work, industrial maintenance, and precision machinery assembly.