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Split Lock Washer, Hi Collar, Thru Hardened, Plain (Inch)
Hi Collar Split Lock Washers that are thru hardened with a plain finish are engineered for high-strength applications requiring superior locking performance and increased bearing surface. Their taller “hi collar” profile provides greater contact under the fastener head, making them ideal for use with socket head cap screws and other fasteners with smaller bearing surfaces. The thru-hardening process delivers exceptional strength, wear resistance, and durability.
With a split design that generates spring tension, these washers help prevent loosening caused by vibration, shock, or fluctuating loads. The plain, uncoated finish is best suited for indoor or controlled environments where corrosion protection is not required. Hi collar thru hardened lock washers are commonly used in precision machinery, automotive assemblies, tooling, and high-performance mechanical systems demanding reliable and consistent locking action.
