7/8 Hi-Collar Helical Spring Lock Washer is sized to pair with the matching socket head cap screw where a regular split lock washer will not fit the counterbore. Its helical form adds resistance to loosening while preserving the counterbore fit expected in socket head cap screw assemblies. Pair it with the matching socket head cap screw callout when building maintenance kits or fixture bills.
Use this style for panel and guard mounting, bracket retention, access covers, and machine enclosures when a standard split lock washer has too much outside diameter for the counterbore. Nylon insert socket cap screws provide a different locking approach, with the pellet in the thread instead of spring action under the head.
Use Cold Headers when a drawing calls for the washer that fits inside a socket head cap screw counterbore. Match the washer by nominal screw size, then verify the assembly has the counterbore geometry intended for this style.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
