USA Flat Washers

USA 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 stocks USA Flat Washers in a full range of sizes, grades, and finishes, with fast 3-5 day shipping. Popular options include plain steel usa flat washers, yellow zinc usa flat washers, and zinc plated usa flat washers.

Product Name	Bolt or Screw Size	Inside Diameter	Outside Diameter	Material	Finish
47.63100	1/2" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 9/16" I.D. x 1 3/8" O.D.), USA	850250	1/2"	9/16"	1 3/8"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
68.61500	9/16" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 5/8" I.D. x 1 1/2" O.D.), USA	850300	9/16"	5/8"	1 1/2"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
44.21550	5/8" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 11/16" I.D. x 1 3/4" O.D.), USA	850350	5/8"	11/16"	1 3/4"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
53.94600	3/4" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 13/16" I.D. x 2" O.D.), USA	850400	3/4"	13/16"	2"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
92.96900	7/8" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 15/16" I.D. x 2 1/4" O.D.), USA	850450	7/8"	15/16"	2 1/4"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
117.00750	1" Flat Washers (USS), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 1 1/16" I.D. x 2 1/2" O.D.), USA	850500	1"	1 1/16"	2 1/2"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
9.36900	1/4" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 9/32" I.D. x 5/8" O.D.), USA	852050	1/4"	9/32"	5/8"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
9.87700	5/16" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 11/32" I.D. x 11/16" O.D.), USA	852100	5/16"	11/32"	11/16"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
12.07700	3/8" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 13/32" I.D. x 13/16" O.D.), USA	852150	3/8"	13/32"	13/16"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
20.60000	7/16" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 15/32" I.D. x 59/64" O.D.), USA	852200	7/16"	15/32"	59/64"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
29.96900	1/2" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 17/32" I.D. x 1 1/16" O.D.), USA	852250	1/2"	17/32"	1 1/16"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
52.58500	9/16" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 19/32" I.D. x 1 3/16" O.D.), USA	852300	9/16"	19/32"	1 3/16"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
24.10750	5/8" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 21/32" I.D. x 1 5/16" O.D.), USA	852350	5/8"	21/32"	1 5/16"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
32.80750	3/4" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 13/16" I.D. x 1 1/2" O.D.), USA	852400	3/4"	13/16"	1 1/2"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
49.17700	7/8" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 15/16" I.D. x 1 3/4" O.D.), USA	852450	7/8"	15/16"	1 3/4"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details
65.79250	1" Flat Washers (SAE), Medium Carbon Through Hardened Steel, Zinc Cr+3 (Dims: 1 1/16" I.D. x 2" O.D.), USA	852500	1"	1 1/16"	2"	Medium Carbon Through Hardened Steel	Zinc Cr+3	View Details

Showing 61-76 of 76 Results

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Showing 61-76 of 76 Results

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Materials and Finishes

USA 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 USS flat washers, SAE flat washers, and structural washers to round out the assembly.

How to Choose

Size it first with diameter, thread pitch, and length. From there, pick the grade that handles the load and a finish that matches where it will live, moving to alloy or stainless for high-stress or wet conditions.

USA Flat Washers Industry Applications

USA Flat Washers are relied on wherever the work demands dependable, professional-grade results. Electrical and automotive back oversized and soft-material holes with them, while HVAC and construction spread clamping load and protect surfaces with them. Flat, fender, and split or tooth lock styles, including F436 hardened structural washers.

Frequently Asked Questions

What materials and finishes are usa flat washers available in?

USA 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. Common options include nylon flat washers and black oxide flat washers.

What are usa flat washers used for?

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

How do I choose the right usa flat washers?

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 structural bolts, metric flat washers, fasteners, thru hardened flat washers, bolts, metric, environmental, USA washers, and Finished Hex Nuts.