Value Collection FWUIS031-100BX Uss Flat Washer 5/16 in

Product Description

The VALUE COLLECTION FWUIS031-100BX is a USS flat washer designed for use with 5/16 inch fasteners in general mechanical, plumbing, electrical, and HVAC assembly applications. Built to USS (United States Standard) dimensional specifications, this washer features a 3/8 inch inner diameter, 7/8 inch outer diameter, and 5/64 inch thickness. Constructed from steel with a plain finish, it distributes load across a larger surface area to reduce fastener pull-through and protect the clamped material. This box quantity ships in a pack of 100 washers, suited for technicians and tradespeople who need reliable hardware in volume for service or installation work.

This USS flat washer is appropriate for residential and light commercial applications wherever a 5/16 inch bolt or screw is used. Common installation scenarios include equipment mounting, ductwork fastening, pipe support bracketing, electrical panel work, and structural assembly. The wider outer diameter characteristic of USS washers makes them a preferred choice over SAE washers when broader load distribution is required on softer materials or oversized holes.

Key Features

• USS specification geometry provides wider outer diameter for improved load distribution compared to SAE washers
• 3/8 inch inner diameter fits 5/16 inch fasteners with standard clearance
• 7/8 inch outer diameter spreads clamping force across a larger bearing surface
• 5/64 inch thickness meets USS standard for this screw size
• Steel construction offers solid strength for general mechanical and trade use
• Plain finish suits indoor and dry-environment applications out of the box

Compatibility

Designed for use with 5/16 inch screws and bolts conforming to USS flat washer dimensional standards. Suitable for inch-system fastener assemblies in HVAC, plumbing, electrical, and general mechanical applications.

Installation Notes

Installation requires no specialized tools beyond standard hand or power tools appropriate for the fastener being used. Place the washer between the fastener head or nut and the mating surface before torquing. Ensure the inner diameter clears the fastener shank without binding. Plain finish washers are not corrosion-resistant and should not be used in wet, outdoor, or chemically exposed environments without additional protective measures.