SAE Flat Washers

SAE Flat Washers sit under a bolt head or nut to spread the clamp load and protect the work surface. The right washer protects the joint, spreads the load, and keeps the fastener from working loose over time. South Coast Fasteners keeps SAE Flat Washers in stock and ready to ship, with fast 3-5 day shipping.

Product Name	Bolt or Screw Size	Material	Inside Diameter	Outside Diameter	Finish	Thickness
120.76920	1" Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1 1/16" I.D. x 2" O.D.) (Bulk Qty is per 50 lb Box, 575 Pieces)	346013	1"	Low Carbon Steel	1 1/16"	2"	Plain		View Details
0.00000	1 1/8" Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1 1/4" I.D. x 2 1/4" O.D.) (Bulk Qty is per 50 lb Box, 475 Pieces)	346014	1 1/8"	Low Carbon Steel	1 1/4"	2 1/4"	Plain		View Details
0.00000	1 1/4" Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1 3/8" I.D. x 2 1/2" O.D.) (Bulk Qty is per 50 lb Box, 310 Pieces)	346015	1 1/4"	Low Carbon Steel	1 3/8"	2 1/2"	Plain		View Details
0.00000	1 3/8" Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1 1/2" I.D. x 2 3/4" O.D.) (Bulk Qty is per 50 lb Box, 255 Pieces)	346016	1 3/8"	Low Carbon Steel	1 1/2"	2 3/4"	Plain		View Details
123.99230	1 1/2" Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1 5/8" I.D. x 3" O.D.) (Bulk Qty is per 50 lb Box, 210 Pieces)	346017	1 1/2"	Low Carbon Steel	1 5/8"	3"	Plain		View Details
0.00000	#4 Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1/8" I.D. x 5/16" O.D.) (Bulk Qty is per 50 lb Box, 83,330 Pieces)	346070	#4	Low Carbon Steel	1/8 "	5/16"	Plain		View Details
0.00000	#5 Flat Washers (SAE), Low Carbon Steel, Plain (Dims: .145" I.D. x .286" O.D. x .032" Thk.) (Bulk Qty is per 50 lb Box, 100,000 Pieces)	346080	#5	Low Carbon Steel	.145 "	.286"	Plain	.032"	View Details
90.28080	#12 Flat Washers (SAE), Low Carbon Steel, Plain (Dims: 1/4" I.D. x 9/16" O.D.) (Bulk Qty is per 50 lb Box, 6,670 Pieces)	346090	#12	Low Carbon Steel	1/4"	9/16"	Plain		View Details
0.00000	#6 Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 5/32" I.D. x 3/8" O.D.) (Bulk Qty is per 50 lb Box, 37,040 Pieces)	347001	#6	Low Carbon Steel	5/32 "	3/8"	Zinc Cr+3		View Details
0.00000	#8 Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 3/16" I.D. x 7/16" O.D.) (Bulk Qty is per 50 lb Box, 27,620 Pieces)	347002	#8	Low Carbon Steel	3/16 "	7 /16"	Zinc Cr+3		View Details
0.00000	#10 Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 7/32" I.D. x 1/2" O.D.) (Bulk Qty is per 50 lb Box, 21,460 Pieces)	347003	#10	Low Carbon Steel	7/32 "	1/2"	Zinc Cr+3		View Details
0.00000	1/4" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 9/32" I.D. x 5/8" O.D.) (Bulk Qty is per 50 lb Box, 10,850 Pieces)	347004	1/4"	Low Carbon Steel	9/32"	5/8"	Zinc Cr+3		View Details
0.00000	5/16" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 11/32" I.D. x 11/16" O.D.) (Bulk Qty is per 50 lb Box, 9,600 Pieces)	347005	5/16"	Low Carbon Steel	11/32"	11/16"	Zinc Cr+3		View Details
0.00000	3/8" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 13/32" I.D. x 13/16" O.D.) (Bulk Qty is per 50 lb Box, 6,900 Pieces)	347006	3/8"	Low Carbon Steel	13/32"	13/16"	Zinc Cr+3		View Details
0.00000	7/16" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 15/32" I.D. x 59/64" O.D.) (Bulk Qty is per 50 lb Box, 5,400 Pieces)	347007	7/16"	Low Carbon Steel	15/32"	59/64"	Zinc Cr+3		View Details
0.00000	1/2" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 17/32" I.D. x 1 1/16" O.D.) (Bulk Qty is per 50 lb Box, 2,650 Pieces)	347008	1/2"	Low Carbon Steel	17/32"	1 1/16"	Zinc Cr+3		View Details
0.00000	9/16" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 19/32" I.D. x 1 3/16" O.D.) (Bulk Qty is per 50 lb Box, 2,290 Pieces)	347009	9/16"	Low Carbon Steel	19/32"	1 3/16"	Zinc Cr+3		View Details
0.00000	5/8" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 21/32" I.D. x 1 5/16" O.D.) (Bulk Qty is per 50 lb Box, 1,750 Pieces)	347010	5/8"	Low Carbon Steel	21/32"	1 5/16"	Zinc Cr+3		View Details
0.00000	3/4" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 13/16" I.D. x 1 1/2" O.D.) (Bulk Qty is per 50 lb Box, 1,100 Pieces)	347011	3/4"	Low Carbon Steel	13/16"	1 1/2"	Zinc Cr+3		View Details
0.00000	7/8" Flat Washers (SAE), Low Carbon Steel, Zinc Cr+3 (Dims: 15/16" I.D. x 1 3/4" O.D.) (Bulk Qty is per 50 lb Box, 760 Pieces)	347012	7/8"	Low Carbon Steel	15/16"	1 3/4"	Zinc Cr+3		View Details

Showing 21-40 of 123 Results

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Showing 21-40 of 123 Results

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Materials and Finishes

SAE 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, fasteners, and Finished Hex Nuts to round out the assembly.

How to Choose

Match the grade to the working load and the finish to the environment after locking in diameter, thread pitch, and length. Harsh or corrosive settings call for alloy or stainless.

SAE Flat Washers Industry Applications

SAE Flat Washers are relied on wherever the work demands dependable, professional-grade results. Fabrication and welding add tension to keep joints tight with them, while automotive and HVAC back oversized and soft-material holes with them. Flat, fender, and split or tooth lock styles, including F436 hardened structural washers.

Frequently Asked Questions

What materials and finishes are sae flat washers available in?

What are sae flat washers used for?

SAE Flat Washers see daily use across fabrication, welding, automotive, and HVAC, from structural framing and heavy equipment to machinery and general repair.

How do I choose the right sae flat washers?

Match the grade to the working load and the finish to the environment after locking in diameter, thread pitch, and length. Harsh or corrosive settings call for alloy or stainless.

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?

We are a single source for fasteners, PPE, hand tools, cutting tools, abrasives, and industrial supplies, priced to compete and shipped fast by a crew that uses this gear every day.