5/8 Hi-Collar Helical Spring Lock Washer is the companion washer for a matching nominal-size socket head cap screw in machinery and fixture work. The split helical ring compresses as the screw seats, keeping spring take-up under the head and helping resist loosening under vibration. A 5/8 hi-collar washer pairs with a 5/8 socket head cap screw by nominal size.
Typical applications include equipment with counterbored joints, recessed cap screws, and limited washer clearance, where washer clearance under the socket head is part of the design. Plain carbon steel should be kept dry and oiled; ask about stainless washers as a non-catalog item when exposure matters. Compare Alloy Steel Socket Head Cap Screws when building a complete inch socket-screw order.
For hard-to-find socket screw accessories, Cold Headers can help line up the washer size with the matching cap screw requirement. The nominal size matches the screw size; do not size this washer from a broad outside-diameter assumption.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
