Low Carbon Steel Flat Washers - General-Purpose Flat Washers

Low carbon steel flat washers are the most widely used washers in industrial and commercial fastener assemblies, providing economical load distribution, vibration resistance, and surface protection. Superior Washer & Gasket Corp manufactures steel flat washers in a comprehensive range of standard sizes and produces custom steel washers to your dimensional requirements.

Our ISO 9001:2015 certified flat washer manufacturing ensures consistent quality across all carbon steel washer orders. We maintain broad inventory of steel flat washers for fast delivery and offer zinc-plated, hot-dip galvanized, and other surface finish options-all made in the U.S.A.

Low carbon steel for general-purpose load distribution
Comprehensive standard size inventory in stock
Custom steel flat washers available
Multiple surface finish options
ISO 9001:2015 certified; made in the U.S.A.

Showing 301–350 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-1334-030	ID 0.195	OD 0.5	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1335-032	ID 0.195	OD 0.62	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1336-038	ID 0.195	OD 0.75	Thickness 0.038	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1337-025	ID 0.196	OD 0.296	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1338-059	ID 0.196	OD 0.312	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1339-030	ID 0.196	OD 0.323	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1340-049	ID 0.196	OD 0.345	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1341-025	ID 0.196	OD 0.353	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1342-020	ID 0.196	OD 0.374	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1343-040	ID 0.196	OD 0.375	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1344-077	ID 0.196	OD 0.437	Thickness 0.077	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1345-059	ID 0.196	OD 0.445	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1346-025	ID 0.196	OD 0.491	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1347-050	ID 0.196	OD 0.5	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1348-046	ID 0.196	OD 0.505	Thickness 0.046	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1349-016	ID 0.196	OD 0.561	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1350-035	ID 0.196	OD 0.568	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1351-093	ID 0.196	OD 0.625	Thickness 0.093	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1352-093	ID 0.196	OD 0.687	Thickness 0.093	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1353-051	ID 0.196	OD 0.72	Thickness 0.051	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1354-067	ID 0.196	OD 0.735	Thickness 0.067	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1355-093	ID 0.196	OD 0.75	Thickness 0.093	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1357-019	ID 0.197	OD 0.31	Thickness 0.019	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1358-005	ID 0.197	OD 0.312	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1359-016	ID 0.197	OD 0.32	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1359-032	ID 0.197	OD 0.32	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1360-031	ID 0.197	OD 0.344	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1361-031	ID 0.197	OD 0.35	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1362-027	ID 0.197	OD 0.368	Thickness 0.027	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1363-048	ID 0.197	OD 0.374	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1364-040	ID 0.197	OD 0.375	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1365-010	ID 0.197	OD 0.392	Thickness 0.01	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1366-015	ID 0.197	OD 0.394	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1367-058	ID 0.197	OD 0.401	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1368-032	ID 0.197	OD 0.433	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1369-060	ID 0.197	OD 0.437	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1370-090	ID 0.197	OD 0.44	Thickness 0.09	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1371-047	ID 0.197	OD 0.498	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1372-040	ID 0.197	OD 0.5	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1373-035	ID 0.197	OD 0.568	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1374-040	ID 0.197	OD 0.614	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1375-062	ID 0.197	OD 0.62	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1376-043	ID 0.197	OD 0.622	Thickness 0.043	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1377-042	ID 0.197	OD 0.636	Thickness 0.042	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1378-070	ID 0.197	OD 0.68	Thickness 0.07	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1379-060	ID 0.197	OD 0.688	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1380-033	ID 0.197	OD 0.746	Thickness 0.033	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1380-050	ID 0.197	OD 0.746	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1381-047	ID 0.197	OD 0.75	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1383-032	ID 0.198	OD 0.305	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity

Low Carbon Steel Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about low carbon steel flat washers.

What are low carbon steel flat washers?
Low carbon steel flat washers are manufactured from low carbon steel (typically 1008 through 1020 grade), the most common and economical washer material for general-purpose fastener applications. Low carbon steel offers good formability, consistent dimensional quality, and adequate strength for the vast majority of industrial, construction, and mechanical assembly applications.

What finishes are available for low carbon steel flat washers?
Low carbon steel is susceptible to corrosion and is typically supplied with a protective finish. Common finishes include zinc plating (clear or yellow), hot-dip galvanizing, phosphate and oil, black oxide, and plain (oiled). For corrosive environments, zinc plating or stainless steel is recommended. Contact us to specify your finish requirement.

What is the difference between low carbon steel and mild steel washers?
The terms are essentially interchangeable. Mild steel and low carbon steel both refer to steels with a carbon content generally below 0.30%, most commonly in the 1008-1020 range for washer applications. Both terms describe the same class of material.

Can you make custom low carbon steel flat washers?
Yes. Superior Washer manufactures custom low carbon steel washers to your OD, ID, and thickness specifications, in a wide range of finishes. Contact us via the Quick Quote form or by phone.

Are your low carbon steel flat washers made in the USA?
Yes. All low carbon steel flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Low carbon steel is our most economical general-purpose washer material. Browse the full flat washers catalog to see all materials available for your application.