Value Collection R52000123 Uss Flat Washer 1/2 in Steel

Product Description

The VALUE COLLECTION R52000123 is a USS flat washer designed for use with 1/2-inch screws and fasteners. Manufactured from steel with a zinc-plated finish, this washer distributes load across the fastener bearing surface, protecting the mated material and reducing the risk of pull-through. It meets USS (United States Standard) dimensional standards, which specify a larger outer diameter relative to the screw size compared to SAE washers. With a 9/16-inch inner diameter, 1-3/8-inch outer diameter, and a thickness of 0.1094 inches, this washer suits general-purpose structural and mechanical assembly applications.

This washer is used across a wide range of trade and industrial applications including HVAC equipment mounting, plumbing fixture installation, electrical panel and equipment anchoring, and general structural fastening. The USS series is the standard choice when a larger bearing surface is needed to prevent fastener heads or nuts from pulling into softer substrates such as wood framing, sheet metal, and composite panels. It is handled by maintenance technicians, pipefitters, electricians, and general contractors in both residential and light commercial settings.

Key Features

• USS flat washer standard — larger OD than SAE for increased load distribution
• Steel construction with zinc-plated finish for corrosion resistance in general-purpose environments
• 9/16-inch inner diameter fits standard 1/2-inch fasteners with proper clearance
• 1-3/8-inch outer diameter provides wide bearing surface to protect mating material
• 0.1094-inch thickness meets USS dimensional tolerances for consistent stack height in assemblies
• Inch measurement system — compatible with standard SAE and USS fastener hardware

Compatibility

Designed as an OEM-style replacement or general-use flat washer for applications requiring a 1/2-inch screw size USS flat washer with inch-system fastener hardware.

Installation Notes

Install with the appropriate 1/2-inch bolt or screw using standard hand tools or a socket set. Ensure the washer seats flush against the bearing surface before torquing the fastener. Zinc plating provides mild corrosion protection and is not rated for continuous outdoor exposure in high-moisture or chemically active environments — consult applicable fastener standards for those applications. No power shutdown is required for washer installation, but follow all applicable site safety protocols when working on mechanical or electrical assemblies.