Hillman Fasteners 270067 Flat Washer 1/2 in Zinc Steel 50 Pack

Product Description

The HILLMAN FASTENERS 270067 is a 1/2 inch USS wide pattern flat washer made from zinc plated steel. Flat washers distribute load across a fastened joint, reduce surface damage under bolt heads and nuts, and help prevent loosening caused by vibration. The USS wide pattern provides a larger outer diameter than standard flat washers, making these well suited for applications where increased bearing surface is needed. Each pack contains 50 washers. These are a staple fastener stocked by plumbing, mechanical, and general construction trades.

These washers are used in residential and commercial construction, mechanical equipment mounting, pipe support systems, and general structural fastening. The USS wide pattern designation indicates conformance to United States Standard sizing, which is common across HVAC equipment mounting, plumbing pipe hangers, electrical panel and conduit support work, and general trade applications where a broader load-bearing surface is required under a 1/2 inch fastener.

Key Features

• USS wide pattern provides larger outer diameter for increased load distribution
• Zinc plated steel construction resists corrosion in typical indoor and sheltered environments
• 1/2 inch bore fits standard 1/2 inch bolts and threaded rod
• 50 washers per pack for stocking and bulk job use
• Conforms to USS flat washer dimensional standards

Compatibility

Designed as a standard USS wide pattern flat washer for use with 1/2 inch fasteners across general construction, mechanical, plumbing, and electrical trade applications.

Installation Notes

Flat washers are installed by plumbers, electricians, HVAC technicians, and general contractors as part of standard bolted connections. Always de-energize electrical systems and isolate mechanical equipment before performing any fastener work in live service areas. Use the appropriate torque for the bolt grade and application per applicable codes such as NEC or IFGC where fastener assemblies are part of a regulated installation. Do not use zinc plated washers in continuously wet or submerged environments where stainless or hot-dip galvanized hardware is specified.