Value Collection KP61157 Uss Flat Washer Zinc Pack of 25

Product Description

The VALUE COLLECTION KP61157 is a USS flat washer designed for use with 1-3/4 inch screws and fasteners. Manufactured to ASME B18.22.1 standards, this washer features a zinc-plated finish that provides basic corrosion resistance for general-purpose applications. The washer has a 1-7/8 inch inside diameter, a 4 inch outside diameter, and a thickness of 0.18 inches. Each package contains 25 washers. It is a standard inch-measurement fastener used by plumbers, electricians, HVAC technicians, and general contractors wherever a large bearing surface is needed to distribute load under a bolt head or nut.

This USS flat washer is suited for residential and light commercial construction and mechanical applications. The large outside diameter relative to the inside diameter makes it appropriate for use on soft materials or oversized holes where extra load distribution is required. It is sold in packs of 25, making it practical for job-site use or shop stock. Typical applications include structural fastening, equipment mounting, and general mechanical assembly in trade settings.

Key Features

• Meets ASME B18.22.1 USS flat washer standard for consistent sizing and load ratings
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered outdoor use
• 1-7/8 inch inside diameter fits 1-3/4 inch nominal screw and bolt sizes
• 4 inch outside diameter delivers wide load distribution surface
• 0.18 inch thickness provides solid bearing without excessive stack height
• Sold in packs of 25 for job-site and stocking convenience

Compatibility

Designed for use with 1-3/4 inch nominal diameter screws, bolts, and fasteners in inch-measurement applications conforming to USS flat washer specifications.

Installation Notes

Install with the washer seated flat against the mating surface before torquing the fastener. Ensure the fastener shank passes freely through the 1-7/8 inch inside diameter without binding. Zinc-plated washers are not recommended for direct contact with pressure-treated lumber containing copper-based preservatives, as accelerated corrosion may occur. Use appropriate personal protective equipment when handling bulk fastener hardware.