Value Collection LWIS-120USA-500BX No. 12 Split Lock Washer

Product Description

The VALUE COLLECTION LWIS-120USA-500BX is a No. 12 split lock washer manufactured from steel with a zinc plated finish. Split lock washers apply a spring-like tension under a fastener head or nut, resisting loosening caused by vibration and torque relaxation. This washer measures 0.22 inches minimum inside diameter and 0.377 to 0.391 inches outside diameter, with a thickness of 0.056 inches. Sold in a box of 500, this SKU suits applications where a consistent supply of hardware is needed on the job site or in a shop setting.

This split lock washer is suited for mechanical and structural fastening tasks across HVAC, electrical, plumbing, and general trade work wherever No. 12 screws are used. The zinc plated finish provides a basic level of corrosion resistance for indoor and sheltered installations. Electricians, HVAC technicians, and maintenance professionals commonly stock this size for panel work, equipment mounting, and equipment enclosure assembly.

Key Features

• Split lock design resists fastener loosening under vibration
• Steel construction with zinc plated finish for corrosion resistance
• Sized for No. 12 screws with 0.22 to 0.227 inch inside diameter
• Outside diameter ranges from 0.377 to 0.391 inches for consistent seating
• 0.056 inch thickness provides reliable spring tension
• Box quantity of 500 supports production and service use

Compatibility

Designed for use with No. 12 screws in inch-measurement fastener systems. Suitable for general mechanical assembly, equipment mounting, and trade installation work requiring a standard split lock washer at this screw size.

Installation Notes

Install split lock washers between the fastener head or nut and the mating surface before torquing the fastener. Power down or de-energize any equipment before performing fastener work on electrical panels or HVAC components. Do not reuse split lock washers that have been fully compressed flat, as they will no longer provide effective locking tension. Standard hand tools and fastener drivers are sufficient for installation.