Value Collection 81923872 Split Lock Washer 1/2 in 25 Pack

Product Description

The VALUE COLLECTION 81923872 is a Grade 2 steel split lock washer sized for 1/2 inch screws and fasteners. The washer features a zinc plated finish for basic corrosion resistance in general-purpose applications. Inside diameter ranges from 0.502 to 0.512 inches and outside diameter ranges from 0.779 to 0.869 inches, with a nominal thickness of 0.125 inches. The split design bites into mating surfaces under load to resist fastener loosening caused by vibration or torque relaxation. This package contains 25 washers. Electricians, plumbers, HVAC technicians, and mechanical contractors routinely stock these as standard hardware for panel, equipment, and structural fastening work.

Split lock washers of this size are used across residential and light commercial construction and maintenance. Common applications include mounting electrical enclosures, securing equipment brackets, assembling HVAC support structures, and general mechanical assembly wherever a 1/2 inch fastener requires vibration resistance. The zinc plated finish suits indoor and dry to moderately humid environments. These are sold in a 25-piece package, making them suitable for stocking a service van or shop bin.

Key Features

• Grade 2 steel construction for standard-duty mechanical fastening
• Zinc plated finish provides basic corrosion resistance
• ID range 0.502 to 0.512 inches fits 1/2 inch screws and bolts
• OD range 0.779 to 0.869 inches for broad bearing surface coverage
• 0.125 inch nominal thickness with maximum thickness of 0.172 inches
• 25 washers per package for bench stock and field service use

Compatibility

Designed for use with 1/2 inch screws and bolts in standard inch-measurement fastening applications. Suitable for general mechanical, electrical, and HVAC equipment assembly where Grade 2 steel and zinc plated hardware meet project requirements.

Installation Notes

Split lock washers are installed between the fastener head or nut and the mating surface before tightening. Place the washer so the split ends contact both mating surfaces as the fastener is driven. Do not reuse a washer that has been fully compressed flat, as the locking action will be reduced. Follow applicable mechanical and electrical codes, including NEC requirements, when using hardware in electrical enclosure or equipment installations.