1/2 Hi-Collar Helical Spring Lock Washer is proportioned for counterbored socket screw joints where washer outside diameter and section height both matter. Its helical form adds resistance to loosening while preserving the counterbore fit expected in socket head cap screw assemblies. Pair this socket head cap screw washer with orders where the counterbore controls washer clearance.
Maintenance teams may use this size in machine assemblies with socket screws, compact counterbored joints, and repair kits when the matching socket cap screw needs a compact lock washer. Nylon insert socket cap screws provide a different locking approach, with the pellet in the thread instead of spring action under the head.
Cold Headers has supplied specialty socket fasteners since 1962 and supports exact-size washer and cap screw sourcing. Before ordering, compare the print callout to the nominal washer size and the matching socket head cap screw.
Technical Highlights
- Nominal Size: 1/2 (matches screw size)
- Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
- Type: Helical Spring Lock Washer
- Fits: Socket head cap screw counterbores
- Material: Carbon Steel
- Dimensional Standard: ASME B18.21.1
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
