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 351–400 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-1384-031	ID 0.198	OD 0.312	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1385-060	ID 0.198	OD 0.341	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1386-016	ID 0.198	OD 0.365	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1387-031	ID 0.198	OD 0.375	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1388-034	ID 0.198	OD 0.38	Thickness 0.034	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1389-015	ID 0.198	OD 0.393	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1390-060	ID 0.198	OD 0.401	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1391-025	ID 0.198	OD 0.411	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1392-025	ID 0.198	OD 0.422	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1393-050	ID 0.198	OD 0.438	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1394-044	ID 0.198	OD 0.495	Thickness 0.044	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1395-085	ID 0.198	OD 0.5	Thickness 0.085	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1396-034	ID 0.198	OD 0.568	Thickness 0.034	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1397-046	ID 0.198	OD 0.616	Thickness 0.046	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1398-050	ID 0.198	OD 0.623	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1399-125	ID 0.198	OD 0.625	Thickness 0.125	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1400-043	ID 0.198	OD 0.628	Thickness 0.043	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1402-046	ID 0.198	OD 0.754	Thickness 0.046	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1403-064	ID 0.198	OD 0.875	Thickness 0.064	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1407-026	ID 0.199	OD 0.309	Thickness 0.026	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1408-020	ID 0.199	OD 0.312	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1409-030	ID 0.199	OD 0.314	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1410-048	ID 0.199	OD 0.346	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1411-047	ID 0.199	OD 0.356	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1412-005	ID 0.199	OD 0.373	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1413-061	ID 0.199	OD 0.375	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1414-090	ID 0.199	OD 0.378	Thickness 0.09	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1415-030	ID 0.199	OD 0.38	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1416-059	ID 0.199	OD 0.39	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1417-020	ID 0.199	OD 0.392	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1418-031	ID 0.199	OD 0.421	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1419-063	ID 0.199	OD 0.437	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1420-051	ID 0.199	OD 0.495	Thickness 0.051	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1421-037	ID 0.199	OD 0.498	Thickness 0.037	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1422-052	ID 0.199	OD 0.5	Thickness 0.052	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1423-090	ID 0.199	OD 0.503	Thickness 0.09	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1424-040	ID 0.199	OD 0.562	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1427-051	ID 0.199	OD 0.722	Thickness 0.051	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1428-063	ID 0.199	OD 0.75	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1429-060	ID 0.2	OD 0.305	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1430-030	ID 0.2	OD 0.312	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1431-048	ID 0.2	OD 0.341	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1432-010	ID 0.2	OD 0.361	Thickness 0.01	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1433-058	ID 0.2	OD 0.373	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1434-031	ID 0.2	OD 0.375	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1435-041	ID 0.2	OD 0.394	Thickness 0.041	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1436-034	ID 0.2	OD 0.406	Thickness 0.034	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1437-031	ID 0.2	OD 0.42	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1438-062	ID 0.2	OD 0.437	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1439-035	ID 0.2	OD 0.452	Thickness 0.035	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.