Stainless Steel High Collar Split Ring Lock Washers

High Collar Split Ring Lock Washers

Why socket cap screws need a high collar washer

Socket cap screws have a small head diameter and often seat in a counterbore, so a standard split lock washer is too wide and thin to fit or bear properly. The high collar version is narrower to clear the counterbore and thicker to match the socket head's bearing, giving proper spring tension in that tight space. Use it wherever you would use a split ring lock washer under a socket cap screw. Match the grade to the environment, with A2 comparable to 304.

Why choose high collar split ring lock washers

Socket head fit: narrower to clear the counterbore.
Thicker body: matches the socket cap screw bearing.
Spring tension: resists loosening in tight spaces.
Corrosion resistance: 304 and A2 hold up in wet and outdoor use.

Common applications for high collar split ring lock washers

Under socket cap screws in counterbores
Machinery, tooling, and fixtures
Tight-clearance bolted joints
Outdoor and wet-environment machinery

Pair these with stainless socket cap screws, or for standard joints see split ring lock washers, and browse the main lock washers category.

High Collar Split Ring Lock Washers FAQ

What grades do high collar washers come in?

304 stainless and metric A2, which is comparable to 304.

Why not use a standard split lock washer with socket cap screws?

A standard washer is too wide for the counterbore and too thin for the socket head bearing. The high collar version is sized to fit and bear properly.

Where are high collar washers used?

Under socket cap screws in counterbored holes and other tight-clearance joints where a standard lock washer will not fit.