• USS Flat Washers

USS Flat Washers

USS Flat Washers distribute bearing pressure across a joint and help prevent loosening and surface damage. The right washer protects the joint, spreads the load, and keeps the fastener from working loose over time. South Coast Fasteners keeps USS Flat Washers in stock and ready to ship, with fast 3-5 day shipping.

 Product Name
Part Number
Bolt or Screw Size
Inside Diameter
Outside Diameter
Material
Finish
 
ussfltwashyz 1/4" 5/16 " 3/4" Steel Yellow Zinc Cr+6
ussfltwashyz 5/16" 3/8" 7/8" Steel Yellow Zinc Cr+6
ussfltwashyz 3/8" 7/16" 1" Steel Yellow Zinc Cr+6
ussfltwashyz 1/2" 9/16" 1 3/8" Steel Yellow Zinc Cr+6
ussfltwashyz 5/8" 11/16" 1 3/4" Steel Yellow Zinc Cr+6
ussfltwashyz 3/4" 13/16" 2" Steel Yellow Zinc Cr+6
ussfltwashyz 7/8" 15/16" 2 1/4" Steel Yellow Zinc Cr+6
ussfltwashyz 1" 1 1/16" 2 1/2" Steel Yellow Zinc Cr+6
ussfltwashyz 1 1/4" 1 3/8" 3" Steel Yellow Zinc Cr+6
ussfltwashplain 1/4" 5/16" 3/4" Low Carbon Steel Plain
ussfltwashplain 5/16" 3/8" 7/8" Low Carbon Steel Plain
ussfltwashplain 3/8" 7/16" 1" Low Carbon Steel Plain
ussfltwashplain 7/16" 1/2" 1 1/4" Low Carbon Steel Plain
ussfltwashplain 1/2" 9/16" 1 3/8" Low Carbon Steel Plain
ussfltwashplain 9/16" 5/8" 1 1/2" Low Carbon Steel Plain
ussfltwashplain 5/8" 11/16" 1 3/4" Low Carbon Steel Plain
ussfltwashplain 3/4" 13/16" 2" Low Carbon Steel Plain
ussfltwashplain 7/8" 15/16" 2 1/4" Low Carbon Steel Plain
ussfltwashplain 1" 1 1/16" 2 1/2" Low Carbon Steel Plain
ussfltwashplain 1 1/8" 1 1/4" 2 3/4" Low Carbon Steel Plain
Showing 1-20 of 167 Results

Materials and Finishes

USS Flat Washers come in grades matched to the load, from carbon steel through high-strength alloy and corrosion-resistant stainless, with finishes from plain and zinc through hot-dip galvanized for outdoor and washdown service. Pair them with bolts, environmental, and Finished Hex Nuts to round out the assembly.

How to Choose

Start with the diameter, thread pitch, and length your assembly needs, then choose a grade that carries the working load and a finish suited to the environment. Step up to alloy or stainless when strength or corrosion resistance is critical.

USS Flat Washers Industry Applications

USS Flat Washers earn a place in shops, on jobsites, and on production floors. Electrical and welding back oversized and soft-material holes with them; fabrication and automotive spread clamping load and protect surfaces with them; and HVAC add tension to keep joints tight with them. Flat, fender, and split or tooth lock styles, including F436 hardened structural washers.

Frequently Asked Questions

What materials and finishes are uss flat washers available in?

USS Flat Washers come in grades matched to the load, from carbon steel through high-strength alloy and corrosion-resistant stainless, with finishes from plain and zinc through hot-dip galvanized for outdoor and washdown service.

What are uss flat washers used for?

USS Flat Washers are relied on across electrical, welding, fabrication, automotive, and HVAC, from structural framing and heavy equipment to machinery and general repair.

How do I choose the right uss flat washers?

Start with the diameter, thread pitch, and length your assembly needs, then choose a grade that carries the working load and a finish suited to the environment. Step up to alloy or stainless when strength or corrosion resistance is critical.

Can I order in bulk or request a quote?

Yes. Stock covers small orders and full production runs. Reach out for a quote or product help.

Why Choose South Coast Fasteners?

South Coast Fasteners stocks fasteners, PPE, hand tools, cutting tools, abrasives, and industrial supplies at competitive pricing, with fast shipping and a team that works the products daily. We also stock fasteners.