Value Collection 99728 Grade 8 Steel Split Lock Washer

Product Description

The VALUE COLLECTION 99728 is a Grade 8 steel split lock washer sized for 7/8 inch screws and bolts. Split lock washers resist fastener loosening by biting into the mating surface and the fastener bearing face as the assembly is torqued down. This washer is uncoated bare steel, suited for applications where a secondary finish or plating is not required. It measures 0.878 to 0.894 inches inside diameter, 1.459 inches maximum outside diameter, and 0.219 inches thick. Grade 8 material provides high tensile strength appropriate for heavy-duty mechanical and structural fastening work. Electricians, millwrights, pipefitters, and mechanical contractors reach for this washer on equipment mounts, panel attachments, and structural assemblies.

This split lock washer is used in residential and commercial construction, industrial equipment assembly, and mechanical service applications wherever a 7/8 inch fastener requires vibration resistance. It is appropriate for use in static and low-vibration structural joints where the hardened split ring design provides reliable anti-loosening performance. It is installed in inch-measurement fastener systems and does not meet military specifications.

Key Features

• Grade 8 steel construction for high tensile strength in heavy-duty fastening applications
• Split lock design bites into fastener and mating surface to resist vibration-induced loosening
• Inside diameter range of 0.878 to 0.894 inches fits standard 7/8 inch screws and bolts
• Maximum outside diameter of 1.459 inches provides adequate bearing surface
• 0.219 inches thick for consistent spring action and load distribution
• Uncoated finish suitable for use as-installed or with customer-applied secondary treatment

Compatibility

Designed for use with 7/8 inch screws and bolts in inch-measurement fastener assemblies. Verify mating hardware dimensions before installation to confirm fit.

Installation Notes

Installation is performed by any trade using 7/8 inch fasteners in structural or equipment-mounting applications. Place the washer between the fastener bearing face and the mating surface with the split gap oriented consistently. Torque the fastener to the value specified for the bolt grade and joint design — do not substitute this washer for a hardened flat washer in applications that require one. Inspect the washer for cracks or deformation before reuse; split lock washers are generally considered single-use in critical joints.