Value Collection 31321 Split Lock Washer No. 6 Grade 5 Steel

Product Description

The VALUE COLLECTION 31321 is a No. 6 screw split lock washer manufactured from Grade 5 steel with a zinc-plated finish. Split lock washers create tension between a fastener and the mating surface, resisting loosening caused by vibration and torque relaxation. This washer measures 0.141 to 0.148 inches inside diameter, 0.25 inches maximum outside diameter, and 0.031 inches thick. The zinc-plated finish provides basic corrosion resistance for general indoor and light-duty applications. Electricians, HVAC technicians, plumbers, and general maintenance trades use this size when securing small-diameter fasteners in panel assemblies, junction boxes, equipment mounts, and mechanical connections.

The No. 6 split lock washer is a standard hardware component used across residential and light commercial trade work. It is suited for electrical panel wiring, HVAC equipment mounting, plumbing fixture assembly, and general mechanical fastening wherever No. 6 machine screws are specified. The inch-measurement system sizing makes it compatible with standard imperial fastener sets commonly used in North American trade applications.

Key Features

• Grade 5 steel construction for reliable spring tension under load
• Zinc-plated finish for basic corrosion resistance in dry or light-duty environments
• Inside diameter range of 0.141 to 0.148 inches fits No. 6 screw shank
• 0.25 inches maximum outside diameter for compact fastener footprints
• 0.031 inches thick for consistent split-lock engagement
• Inch measurement system — compatible with standard imperial fastener sets

Compatibility

Designed as a standard imperial-size split lock washer for use with No. 6 machine screws in general trade and mechanical fastening applications.

Installation Notes

Install split lock washers between the fastener head and the mating surface before tightening. De-energize any electrical equipment and follow lockout/tagout procedures before accessing panels or junction boxes. Use appropriately sized hand tools or a calibrated torque driver when applying final torque to avoid deforming the washer. Do not reuse split lock washers that have been fully compressed flat, as they will no longer provide effective locking force.