Value Collection 99770 Uss Flat Washer 1-1/8 in Steel

Product Description

The VALUE COLLECTION 99770 is a USS flat washer designed for use with 1-1/8 inch screws and bolts. Manufactured from Grade 8 steel with a plain finish, this washer distributes load across a bearing surface to prevent fastener pull-through and surface damage. The inner diameter measures 1-1/4 inches and the outer diameter measures 2-3/4 inches, conforming to USS (United States Standard) dimensional standards. It is a single-piece per package item suited for heavy fastening applications in structural, mechanical, and trade assembly work.

This washer is used in applications requiring a larger bearing surface relative to the fastener size, which is characteristic of the USS flat washer series. Common installation scenarios include structural steel assembly, machinery mounting, and heavy-duty bolted connections in construction, plumbing support framing, and HVAC equipment anchoring. The plain steel finish is appropriate for interior or protected environments where corrosion exposure is limited.

Key Features

• USS flat washer profile provides a wide outer diameter for increased load distribution
• Grade 8 steel construction for high tensile strength in demanding fastening applications
• 1-1/4 inch inside diameter fits standard 1-1/8 inch screw and bolt shanks
• 2-3/4 inch outside diameter delivers broad bearing surface coverage
• Plain finish steel is ready for use in dry or protected interior installations
• Sold as a single washer; minimum order quantity is 10 units

Compatibility

Designed as a USS-standard flat washer for use with 1-1/8 inch fasteners in general mechanical and structural assembly applications.

Installation Notes

Flat washers are installed by general contractors, millwrights, pipefitters, and trade mechanics as part of bolted assembly work. Always power down or de-energize any associated equipment before working on mechanically fastened assemblies. Ensure the washer seat surface is clean and free of debris before installation. Follow applicable structural or mechanical codes for the specific fastening application.