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U.S. Lock Washers

Grade 5 spring, Grade 8 high-alloy, internal, external, and countersunk lock washers add tension and surface bite to prevent vibration loosening, with zinc finishes and sizes from #4 to 1 inch.

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U.S. Lock Washers for Added Fastening Security

U.S. lock washers help prevent fasteners from loosening due to vibration and movement. They are commonly used in automotive, machinery, construction, and industrial applications where extra security is needed in bolted assemblies.

Help Maintain a Tight Connection

U.S. lock washers are installed under a nut or bolt head to create tension that resists loosening over time. Their design improves fastening security and supports reliable performance in demanding environments.

They are easy to install with standard U.S. fasteners and are useful when assemblies are subject to repeated use, vibration, or movement.

Browse ROGO Fastener’s U.S. lock washer selection to find durable washers for automotive, industrial, construction, and machinery applications. Contact us online or call (845) 692-7646 for help.