Value Collection FWUIS025-100BX Uss Flat Washer 100pk

Product Description

The VALUE COLLECTION FWUIS025-100BX is a USS flat washer designed for use with 1/4 inch screws and fasteners. It features a 5/16 inch inside diameter, a 3/4 inch outside diameter, and a 1/16 inch thickness, conforming to USS (United States Standard) flat washer dimensions. Manufactured from steel with a plain finish, this washer distributes load across a fastener bearing surface, reducing the risk of pull-through and surface damage. It is suited for general mechanical assemblies, structural connections, and trade fabrication work. This package contains 100 washers, making it appropriate for job-site stock or production use.

USS flat washers of this size are commonly used in residential and light commercial construction, HVAC equipment mounting, plumbing fixture installation, electrical panel and conduit support work, and general mechanical assembly. The 1/4 inch screw size is one of the most frequently specified fastener dimensions in trade applications. The USS standard specifies a wider outside diameter than SAE washers of the same screw size, providing greater load distribution on softer or thinner base materials.

Key Features

• USS flat washer profile with wider OD than SAE equivalent for increased bearing surface
• Steel construction provides strength suitable for general mechanical and structural applications
• Plain finish — no coating or plating applied
• 5/16 inch ID fits standard 1/4 inch fastener shanks with appropriate clearance
• 3/4 inch OD distributes clamp load over a broader surface area
• Package quantity of 100 supports job-site and production use

Compatibility

Designed for use with 1/4 inch screws and bolts conforming to USS flat washer dimensional standards. Suitable for inch-system fastener assemblies in HVAC, plumbing, electrical, and general mechanical trade applications.

Installation Notes

USS flat washers are installed between a fastener head or nut and the base material prior to tightening. Ensure the washer inside diameter is compatible with the fastener shank diameter before assembly. Plain-finish steel washers are not corrosion-resistant and should not be used in continuously wet or corrosive environments without appropriate protective measures. Follow applicable mechanical or structural codes for fastener assembly torque and hardware specifications.