Value Collection 99726 Split Lock Washer 5/8 in Grade 8 Steel

Product Description

The VALUE COLLECTION 99726 is a Grade 8 steel split lock washer designed for 5/8 inch fastener applications. Split lock washers create tension under a nut or bolt head to resist loosening caused by vibration and torque relaxation. This washer is uncoated bright finish with an inside diameter range of 0.628 to 0.641 inches and a maximum outside diameter of 1.073 inches. Thickness is 0.156 inches. Grade 8 steel provides higher hardness and load capacity compared to standard Grade 5 or Grade 2 washers. Electricians, pipefitters, millwrights, and general mechanical contractors use these in structural and equipment fastening applications.

This split lock washer is suited for use with 5/8 inch bolts and screws in industrial, commercial, and mechanical installations where vibration resistance is required. Typical applications include equipment mounting, structural steel connections, pump and motor fastening, and panel or bracket assembly. The bright uncoated finish is appropriate for indoor or protected environments where corrosion exposure is minimal. Minimum order quantity is 25 pieces per order.

Key Features

• Grade 8 steel construction for high hardness and clamping load
• Split ring design resists fastener back-off under vibration
• Inside diameter: 0.628 to 0.641 inches, compatible with 5/8 inch fasteners
• Maximum outside diameter: 1.073 inches
• Thickness: 0.156 inches
• Bright uncoated finish, inch measurement system

Compatibility

Designed for use with 5/8 inch screws and bolts in standard inch-measurement fastener assemblies requiring a split lock washer.

Installation Notes

Install split lock washers between the nut or bolt head and the mating surface before torquing the fastener. Ensure the fastener, washer, and mating material are compatible in grade and finish to prevent galvanic or mechanical incompatibility. Follow applicable mechanical codes and equipment manufacturer torque guidance for the specific fastener grade and size. Do not reuse a split lock washer that has been fully compressed flat, as it will no longer provide effective locking force.