Value Collection 88548078 Split Lock Washer 1/2 in Alloy Steel 125pk

Product Description

The VALUE COLLECTION 88548078 is a 1/2 inch alloy steel split lock washer supplied in a package of 125 pieces. Split lock washers are used in bolted assemblies to resist loosening caused by vibration, torque relaxation, and thermal cycling. The helical split design bites into the bearing surface and the fastener to maintain clamp load under dynamic conditions. With an inside diameter range of 0.506 to 0.518 inches, a maximum outside diameter of 0.737 inches, and a thickness of 0.172 inches, this washer is dimensioned to the standard inch-series specification for 1/2 inch fasteners. These are installed by electricians, plumbers, HVAC technicians, pipefitters, and general mechanical tradespeople wherever reliable fastener retention is required.

This split lock washer is suited for residential and commercial mechanical, electrical, and plumbing applications where 1/2 inch bolts, screws, or studs are used. Typical installations include electrical panel mounting, pipe hanger hardware, equipment bases, conduit fittings, and general structural fastener assemblies. The bright uncoated finish is appropriate for indoor and protected indoor-outdoor installations. The 125-piece pack quantity suits both job-site use and shop stock replenishment.

Key Features

• Helical split design resists fastener loosening under vibration and load cycling
• Alloy steel construction provides higher hardness and load capacity compared to low-carbon steel
• Bright uncoated finish — no coating thickness to account for in close-tolerance assemblies
• Inside diameter 0.506 to 0.518 inches fits standard 1/2 inch fasteners
• 0.172 inch thickness meets standard inch-series dimensional requirements
• 125-piece package quantity reduces handling and reorder frequency on active jobs

Compatibility

Designed for use with standard 1/2 inch inch-series bolts, cap screws, and hex screws in mechanical, electrical, and plumbing fastener assemblies requiring vibration-resistant washers.

Installation Notes

Split lock washers are installed between the fastener head or nut and the bearing surface before final torque is applied. Power down all electrical circuits and isolate mechanical systems before accessing fastened assemblies in live equipment. Use appropriate hand tools and follow applicable codes such as the NEC for electrical installations or the IPC and IFGC for plumbing and gas piping hardware. Do not reuse split lock washers that have been fully compressed flat, as the locking function is diminished.