Value Collection 86853199 Uss Flat Washer 1/2 Inch 25 Pack

Product Description

The VALUE COLLECTION 86853199 is a USS flat washer designed for use with 1/2-inch screws and bolts in general industrial, mechanical, and construction fastening applications. Made from alloy steel (grade 1035/1050) with a zinc yellow dichromate finish, this washer provides corrosion resistance and load distribution under fastener heads and nuts. The USS pattern specifies a larger outer diameter relative to the screw size compared to SAE washers, making it suitable for applications requiring a broader bearing surface. Each package contains 25 washers. Inside diameter is 0.557 inches, outside diameter is 1.405 inches, and thickness is 0.132 inches.

This washer is used in a wide range of trade and industrial settings including HVAC equipment mounting, pipe support bracketing, electrical panel installations, and structural assemblies where a standard 1/2-inch fastener is specified. The USS flat washer pattern is commonly called for in mechanical and structural work where load spreading across softer or larger-clearance surfaces is required. Suitable for both indoor and outdoor use when paired with compatible corrosion-resistant fasteners. Sold in a pack of 25 to cover typical service and installation quantities.

Key Features

• USS flat washer pattern with larger OD for improved load distribution
• Alloy steel construction, material grade 1035/1050, for strength in mechanical fastening
• Zinc yellow dichromate finish provides corrosion resistance
• 0.557-inch ID fits standard 1/2-inch screw or bolt shanks
• 1.405-inch OD delivers broad bearing surface under fastener heads or nuts
• Sold in packs of 25 to suit typical job-site quantities

Compatibility

Designed for use with standard 1/2-inch USS-pattern fastener applications in mechanical, structural, and trade installations. Compatible with 1/2-inch screws and bolts where a USS flat washer is specified.

Installation Notes

Installation is performed by mechanics, HVAC technicians, electricians, and plumbers as part of standard fastening assemblies. Always de-energize and lock out equipment before working on any assembly that requires removing or installing hardware. Use appropriate torque tools for the fastener and joint material per the equipment manufacturer specifications or applicable code. Inspect washers for deformation or finish damage before reuse in critical structural joints.