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 401–450 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-1440-057	ID 0.2	OD 0.497	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1441-042	ID 0.2	OD 0.5	Thickness 0.042	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1442-030	ID 0.2	OD 0.531	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1443-030	ID 0.2	OD 0.56	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1444-057	ID 0.2	OD 0.62	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1445-061	ID 0.2	OD 0.625	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1446-068	ID 0.2	OD 0.683	Thickness 0.068	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1450-057	ID 0.201	OD 0.375	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1451-043	ID 0.201	OD 0.377	Thickness 0.043	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1452-018	ID 0.201	OD 0.392	Thickness 0.018	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1453-061	ID 0.201	OD 0.438	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1454-092	ID 0.201	OD 0.498	Thickness 0.092	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1455-036	ID 0.201	OD 0.501	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1457-040	ID 0.201	OD 0.701	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-146-030	ID 0.098	OD 0.31	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1462-020	ID 0.202	OD 0.357	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1463-033	ID 0.202	OD 0.375	Thickness 0.033	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1464-046	ID 0.202	OD 0.423	Thickness 0.046	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1465-016	ID 0.202	OD 0.469	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1466-050	ID 0.202	OD 0.5	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1466-064	ID 0.202	OD 0.5	Thickness 0.064	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1467-041	ID 0.202	OD 0.502	Thickness 0.041	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1468-063	ID 0.202	OD 0.606	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1469-040	ID 0.202	OD 0.627	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1470-058	ID 0.202	OD 0.689	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1475-030	ID 0.203	OD 0.301	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1476-030	ID 0.203	OD 0.312	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1478-043	ID 0.203	OD 0.362	Thickness 0.043	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1479-028	ID 0.203	OD 0.375	Thickness 0.028	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1480-035	ID 0.203	OD 0.377	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1481-058	ID 0.203	OD 0.435	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1482-047	ID 0.203	OD 0.438	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1483-033	ID 0.203	OD 0.44	Thickness 0.033	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1484-015	ID 0.203	OD 0.468	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1485-013	ID 0.203	OD 0.496	Thickness 0.013	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1486-061	ID 0.203	OD 0.5	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1487-084	ID 0.203	OD 0.53	Thickness 0.084	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1488-057	ID 0.203	OD 0.57	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1489-051	ID 0.203	OD 0.62	Thickness 0.051	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1490-040	ID 0.203	OD 0.624	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1491-061	ID 0.203	OD 0.639	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1492-056	ID 0.203	OD 0.747	Thickness 0.056	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1495-043	ID 0.204	OD 0.301	Thickness 0.043	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1497-031	ID 0.204	OD 0.312	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1498-031	ID 0.204	OD 0.328	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1499-035	ID 0.204	OD 0.342	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1500-032	ID 0.204	OD 0.35	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1501-031	ID 0.204	OD 0.372	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1502-020	ID 0.204	OD 0.375	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1503-030	ID 0.204	OD 0.381	Thickness 0.03	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.