Value Collection 12WE External Tooth Lock Washer Spring Steel

Product Description

The VALUE COLLECTION 12WE is a No. 12 screw-size external tooth lock washer designed to resist fastener loosening caused by vibration and torque. Made from Grade 2 spring steel with a zinc-plated finish, it features serrated external teeth that bite into the mating surface and the fastener bearing face when the assembly is tightened. The washer measures 0.231 inches inner diameter, 0.475 inches outer diameter, and 0.028 inches thick, with a hardness rating of 40 to 50 HRC. It is a standard hardware component installed by mechanics, electricians, plumbers, HVAC technicians, and other trades wherever a secure, vibration-resistant fastener assembly is required.

This washer fits No. 12 screw fasteners and is suited for light-duty mechanical and electrical assemblies in residential and commercial applications. It is commonly used in control panel fabrication, HVAC equipment assembly, electrical enclosure mounting, and general sheet metal or structural fastening where the zinc-plated finish provides basic corrosion resistance in mild service environments. Installation is straightforward and requires no special tooling beyond standard hand tools or a torque wrench appropriate to the fastener size.

Key Features

• External tooth design bites into mating surfaces to resist loosening under vibration
• Grade 2 spring steel construction provides consistent elastic tension retention
• Zinc-plated finish offers basic corrosion protection in mild environments
• Hardness of 40 to 50 HRC for reliable grip without fastener damage under normal loads
• 0.028 inch thickness keeps stack height minimal in tight assemblies
• Sized for No. 12 screw with 0.231 inch inner diameter and 0.475 inch outer diameter

Compatibility

Designed for use with No. 12 machine screws and bolts. Suitable as a standard external tooth lock washer in any assembly requiring a 0.231 inch inner diameter washer for vibration-resistant fastening in light to medium-duty applications.

Installation Notes

Install with the teeth facing the fastener bearing surface or the workpiece, not toward a hardened washer face. Ensure the mating surface is clean and free of coatings that would prevent the teeth from seating. Power down or de-energize any electrical equipment before servicing fastened assemblies in live panels. Follow applicable NEC or equipment manufacturer torque guidelines for the fastener being used.