Value Collection 39731 Split Lock Washer 5/8 in Alloy Steel 25pk

Product Description

The VALUE COLLECTION 39731 is a split lock washer designed for 5/8 inch screw applications. Made from AISI 4037 alloy steel with a zinc yellow dichromate finish, this washer provides corrosion resistance and mechanical bite to resist fastener loosening under vibration. The inside diameter ranges from 0.628 to 0.641 inches, the maximum outside diameter is 1.073 inches, and the thickness is 0.156 inches. Sold in packs of 25, these washers are used by maintenance technicians, millwrights, pipefitters, electricians, and general trade professionals wherever a reliable locking fastener solution is needed in standard inch-dimension assemblies.

These split lock washers are suited for use in mechanical, electrical, and plumbing assemblies where fastener retention under dynamic load or vibration is required. Typical applications include equipment mounting, panel attachment, pipe support hardware, and structural connection points in both residential and light commercial settings. The zinc yellow dichromate finish adds a layer of protection in mildly corrosive environments. They are dimensioned to the inch measurement system and are appropriate for general-purpose fastener assemblies using 5/8 inch threaded fasteners.

Key Features

• AISI 4037 alloy steel construction for strength and durability
• Zinc yellow dichromate finish for corrosion resistance in mild environments
• Inside diameter range of 0.628 to 0.641 inches fits standard 5/8 inch screws
• Maximum outside diameter of 1.073 inches and thickness of 0.156 inches
• Split lock design resists fastener back-out under vibration and dynamic load
• Pack of 25 for job-site or service-van stocking

Compatibility

Designed for use with standard 5/8 inch threaded fasteners in inch-dimensioned assemblies across mechanical, electrical, and plumbing trade applications.

Installation Notes

Install with the split gap positioned against the fastener bearing surface before torquing the nut or bolt to final specification. Shut off and de-energize any equipment before accessing fastener points on powered assemblies. Use appropriate hand tools or wrenches per the assembly requirements. Do not reuse deformed or flattened lock washers, as a collapsed split washer no longer provides effective locking action.