Value Collection 36774 Uss Flat Washer 1 in Steel Zinc

Product Description

The VALUE COLLECTION 36774 is a USS flat washer designed for use with 1-inch screws and fasteners. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this washer provides corrosion resistance and load distribution across bolted joints. The inside diameter measures 1-1/16 inches and the outside diameter measures 2-1/2 inches, with a thickness of 11/64 inches. It follows the USS (United States Standard) flat washer specification, which uses a larger outer diameter than SAE-pattern washers to spread clamp load over a wider surface area. Plumbers, electricians, millwrights, and general tradespeople use these washers daily in structural and mechanical fastening applications.

This washer suits residential and commercial applications where a 1-inch fastener requires a broad bearing surface. Common install scenarios include structural connections, equipment mounting, pipe hangers, and fixture anchoring. The larger OD relative to the screw size makes it well suited for use with soft materials or oversized clearance holes where a standard SAE washer would not provide adequate bearing coverage.

Key Features

• USS pattern with 2-1/2 inch OD for wide load distribution beyond standard SAE washer coverage
• Grade 8 steel construction for high tensile strength in demanding fastening applications
• Zinc yellow dichromate finish provides corrosion resistance in moderate-exposure environments
• 1-1/16 inch inside diameter fits 1-inch nominal screw or bolt shank with standard clearance
• 11/64 inch thickness maintains consistent clamp load under torque
• Inch measurement system — compatible with standard US fractional fastener sizing

Compatibility

Designed for use with 1-inch nominal USS-pattern fastener applications. Fits 1-inch screws and bolts where a USS flat washer with a 1-1/16 inch inside diameter and 2-1/2 inch outside diameter is specified.

Installation Notes

Install this washer with the flat face seated flush against the bearing surface before torquing the fastener. Power down or de-energize any equipment before disassembling fastened assemblies. Use appropriate hand tools or impact equipment rated for the fastener grade. Follow applicable building or mechanical codes for the specific fastening application.