Value Collection 31420 Uss Flat Washer 1 in Steel

Product Description

The VALUE COLLECTION 31420 is a USS-pattern flat washer designed for use with 1-inch screws and bolts. Manufactured from steel with a zinc-plated finish, this washer provides a broad bearing surface that distributes clamp load and helps prevent fastener pull-through on softer materials. The zinc coating offers basic corrosion resistance suitable for general-purpose indoor and light-duty applications. With an inside diameter of 1-1/16 inches, an outside diameter of 2-1/2 inches, and a thickness of 0.1719 inches, it meets standard USS dimensional requirements. Plumbers, electricians, HVAC technicians, and general contractors commonly use USS flat washers during equipment mounting, pipe support, and structural fastening tasks.

This washer is suited for residential and light commercial construction, mechanical rooms, equipment pads, and utility installations where a wide-bearing flat washer is required. The USS series features a larger OD-to-ID ratio compared to SAE washers, making it the preferred choice when working with oversized holes or softer substrate materials such as wood framing or composite panels. It is sold as a single piece, making it practical for small repair jobs and service calls.

Key Features

• USS flat washer pattern with wide 2-1/2-inch OD for broad load distribution
• Steel construction for reliable mechanical strength
• Zinc-plated finish for basic corrosion resistance
• 1-1/16-inch inside diameter fits 1-inch nominal fasteners
• 0.1719-inch thickness meets standard USS dimensional tolerances
• Sold individually — no minimum quantity required

Compatibility

Designed as a standard USS flat washer for use with 1-inch nominal screws and bolts in general-purpose fastening applications.

Installation Notes

Install with the appropriate 1-inch fastener using standard hand or power tools. Ensure the mating surface is clean and flat before seating the washer to maintain even load distribution. For outdoor or high-moisture environments, consider a higher-grade corrosion-resistant washer, as zinc plating provides limited protection in prolonged wet exposure. Always torque fasteners according to the fastener manufacturer specifications and applicable codes.