Value Collection LWIA0561USA-100BX Grade 8 Split Lock Washer

Product Description

The VALUE COLLECTION LWIA0561USA-100BX is a Grade 8 steel split lock washer sized for 9/16 inch fasteners. The split helical design bites into the bearing surface and fastener head when the assembly is torqued, resisting loosening caused by vibration and dynamic loads. A zinc yellow dichromate finish provides corrosion resistance suitable for general industrial and mechanical applications. This washer ships in a box quantity of 100 pieces, making it practical for production assembly, maintenance shops, and field service kits. Typical installers include millwrights, pipefitters, electricians, and general mechanical contractors working with high-strength fastener assemblies.

This split lock washer is suited for use anywhere a 9/16 inch fastener requires positive locking under vibration or cyclic loading. Common applications include structural steel connections, mechanical equipment mounting, HVAC equipment bases, electrical enclosure hardware, and general industrial maintenance. The Grade 8 material rating indicates high tensile strength suitable for demanding mechanical joints. The zinc yellow dichromate finish is compatible with indoor and moderate-exposure outdoor environments.

Key Features

• Grade 8 steel construction for high-strength fastener assemblies
• Split helical profile resists fastener loosening under vibration
• Zinc yellow dichromate finish for corrosion resistance
• Inside diameter range of 0.564 to 0.574 inches fits standard 9/16 inch screws and bolts
• Maximum outside diameter of 0.965 inches for compact bearing surface
• Box quantity of 100 pieces for shop stock or production use

Compatibility

Designed for use with 9/16 inch screws and bolts in standard inch-measurement fastener assemblies requiring a Grade 8 split lock washer.

Installation Notes

Install with the split gap oriented so the washer can compress fully as the fastener is torqued to specification. Always degrease mating surfaces before assembly to ensure consistent clamp load. Follow applicable mechanical or structural codes for proper fastener torque values when used in load-bearing connections. Inspect washers for cracks or deformation before reuse — split lock washers are typically single-use components in critical joints.