Hangers usfw0380100oz Uss Flat Washer 3/8 Inch Zinc

Product Description

The HANGERS usfw0380100oz is a USS-standard flat washer designed to distribute load and protect fastener bearing surfaces in mechanical, plumbing, and electrical installations. It carries a 3/8-inch nominal bolt size, a 1-inch outside diameter, and a 7/16-inch inside diameter. The zinc finish provides corrosion resistance suitable for general indoor and light-duty outdoor applications. Plumbers, electricians, HVAC technicians, and general contractors reach for this washer wherever a USS-pattern flat washer is called out on threaded assemblies.

This washer fits standard 3/8-inch fastener applications across residential and light commercial construction and mechanical work. Typical uses include pipe hanger assemblies, equipment mounting, electrical panel and conduit support brackets, and structural fastening where a larger bearing surface is needed to prevent pull-through or surface damage. Its zinc coating makes it a practical choice for interior mechanical rooms and similar environments where mild corrosion exposure is a factor.

Key Features

• USS standard flat washer profile provides a larger outside diameter relative to bolt size for improved load distribution
• 3/8-inch nominal bolt size with 7/16-inch inside diameter for a proper slip fit on standard 3/8-inch threaded fasteners
• 1-inch outside diameter spreads clamping force across a wider surface area
• Zinc finish offers corrosion resistance for general-purpose indoor and protected outdoor use
• Widely compatible with pipe hanger hardware, equipment mounting, and conduit support applications

Compatibility

Designed as a USS-pattern flat washer for use with 3/8-inch threaded fasteners in standard mechanical, plumbing, HVAC, and electrical installations.

Installation Notes

Install between the fastener head or nut and the mating surface to distribute load and reduce surface damage. Ensure the fastener diameter matches the 7/16-inch inside diameter before assembly. Follow applicable code requirements per NEC, IPC, or IFGC when used in electrical or mechanical system support applications. No special tooling is required beyond standard wrenches or sockets appropriate for the fastener being used.

Technical Specifications

• Product Type: USS Flat Washer
• Nominal Bolt Size: 3/8 inches
• Inside Diameter: 7/16 inches
• Outside Diameter: 1 inch
• Finish: Zinc

Standard Information

• Brand: HANGERS
• Manufacturer Part Number: usfw0380100oz