Metric Zinc Plated Steel High Collar Split Ring Lock Washers
What are metric zinc plated high collar lock washers? Metric zinc plated steel high collar lock washers are narrow, thick metric helical spring washers made for socket head cap screws, with a zinc plating for corrosion resistance. Sized for metric cap screws, the smaller outer diameter fits under socket heads and in counterbored holes.
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When to use metric zinc high collar lock washers
Metric zinc plated high collar washers are the economical choice for metric socket head cap screw joints in dry and mild conditions. The reduced outer diameter fits under the cap head and in a counterbored hole where a standard washer is too wide, and the extra thickness keeps the helical spring locking force. The zinc plating adds corrosion resistance over bare steel. Match the washer to your metric cap screw size, such as M4, M6, M8, or M10. For wet or coastal exposure, step up to a metric stainless lock washer. Tighten to the correct torque to activate the spring action.
Why choose metric zinc plated steel high collar split ring lock washers
- Metric sizing: matched to M-series socket cap screws.
- Fits socket cap screws: smaller OD for counterbored holes.
- Economical: cost-effective zinc finish for common jobs.
- Vibration locking: thick split ring bites the surface to resist loosening.
Common applications for metric zinc high collar lock washers
- Metric socket head cap screw assemblies
- Counterbored holes and tight clearances
- Imported machinery and equipment
- Indoor and dry metric work
For wet or coastal metric use, see metric 18-8 stainless high collar split ring lock washers, and browse every material on the main lock washers category.
Metric Zinc Plated Steel High Collar Split Ring Lock Washers FAQ
What metric sizes are available?
Common metric diameters such as M4, M6, M8, and M10. Match the washer to your metric socket cap screw.
Are metric zinc high collar washers good outdoors?
The zinc plating suits indoor and general dry use. For wet, coastal, or saltwater exposure, choose a metric stainless lock washer.
Why use a high collar washer with a socket cap screw?
Its smaller outer diameter fits under the narrow head of a socket head cap screw and into a counterbored hole, where a standard washer would be too wide.