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 4601–4650 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-6597-040	ID 0.125	OD 0.5	Thickness 0.04	Material Steel Low Carbon	ID TOL +-0005	OD TOL +-.005	Quantity
650-6598-036	ID 0.206	OD 0.536	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-660-040	ID 0.147	OD 0.377	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6600-020	ID 0.444	OD 0.701	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6601-064	ID 0.346	OD 0.751	Thickness 0.064	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6602-074	ID 0.339	OD 0.785	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6603-061	ID 0.535	OD 0.812	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6604-030	ID 0.432	OD 0.874	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6605-060	ID 0.539	OD 0.998	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6606-092	ID 0.283	OD 1.0	Thickness 0.092	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6607-062	ID 0.38	OD 1.123	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6608-087	ID 0.894	OD 1.751	Thickness 0.087	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6609-091	ID 0.524	OD 2.124	Thickness 0.091	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-661-005	ID 0.147	OD 0.391	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6610-050	ID 0.343	OD 1.5	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6611-062	ID 0.204	OD 0.44	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6612-026	ID 0.12	OD 0.25	Thickness 0.026	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6613-060	ID 0.243	OD 0.462	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6614-028	ID 0.203	OD 0.498	Thickness 0.028	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6616-063	ID 0.398	OD 1.377	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6619-011	ID 0.22	OD 0.393	Thickness 0.011	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-662-047	ID 0.147	OD 0.409	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6621-032	ID 0.175	OD 0.502	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6622-033	ID 0.314	OD 0.749	Thickness 0.033	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6623-101	ID 0.258	OD 0.867	Thickness 0.101	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6624-022	ID 0.799	OD 1.249	Thickness 0.022	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6628-159	ID 0.809	OD 1.471	Thickness 0.159	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.010	Quantity
650-6629-154	ID 0.984	OD 1.571	Thickness 0.154	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.010	Quantity
650-663-031	ID 0.147	OD 0.5	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6630-103	ID 0.408	OD 1.627	Thickness 0.103	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.010	Quantity
650-6631-240	ID 0.937	OD 1.749	Thickness 0.24	Material Steel Low Carbon	ID TOL +-.010	OD TOL +-.010	Quantity
650-6632-238	ID 0.655	OD 1.998	Thickness 0.238	Material Steel Low Carbon	ID TOL +-.010	OD TOL +-.010	Quantity
650-6636-014	ID 0.346	OD 0.564	Thickness 0.014	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6637-062	ID 0.501	OD 0.937	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6638-090	ID 0.41	OD 0.984	Thickness 0.09	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6639-096	ID 0.534	OD 1.062	Thickness 0.096	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6640-078	ID 0.539	OD 1.064	Thickness 0.078	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6641-064	ID 0.769	OD 1.187	Thickness 0.064	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6643-115	ID 0.941	OD 1.747	Thickness 0.115	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6644-117	ID 0.442	OD 1.998	Thickness 0.117	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6647-031	ID 0.262	OD 0.565	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6648-037	ID 0.267	OD 0.624	Thickness 0.037	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6649-058	ID 0.352	OD 0.625	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-665-031	ID 0.148	OD 0.31	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6650-074	ID 0.347	OD 0.628	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6651-058	ID 0.266	OD 0.735	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6652-060	ID 0.509	OD 0.751	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6653-074	ID 0.407	OD 0.813	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6655-058	ID 0.347	OD 1.248	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6656-129	ID 0.816	OD 1.57	Thickness 0.129	Material Steel Low Carbon	ID TOL +-.010	OD TOL +-.010	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.