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 4401–4450 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-6245-030	ID 0.659	OD 1.251	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-625-045	ID 0.144	OD 0.441	Thickness 0.045	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6250-023	ID 0.151	OD 0.25	Thickness 0.023	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6251-020	ID 0.125	OD 0.252	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6253-031	ID 0.165	OD 0.374	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6254-010	ID 0.167	OD 0.374	Thickness 0.01	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6255-005	ID 0.166	OD 0.375	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6256-040	ID 0.188	OD 0.425	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6257-031	ID 0.252	OD 0.438	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6258-034	ID 0.316	OD 0.441	Thickness 0.034	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6259-030	ID 0.329	OD 0.563	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-626-031	ID 0.144	OD 0.5	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6260-058	ID 0.219	OD 0.586	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6261-005	ID 0.376	OD 0.622	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6262-059	ID 0.249	OD 0.625	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6264-025	ID 0.531	OD 0.748	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6265-032	ID 0.5	OD 0.75	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6266-050	ID 0.39	OD 0.871	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6268-057	ID 0.504	OD 0.877	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6269-063	ID 0.439	OD 1.002	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-627-040	ID 0.144	OD 0.56	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6270-025	ID 0.798	OD 1.248	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6271-015	ID 0.811	OD 1.249	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6272-025	ID 0.811	OD 1.252	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6273-058	ID 0.311	OD 1.369	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6274-090	ID 0.442	OD 1.375	Thickness 0.09	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6275-063	ID 0.938	OD 1.378	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6276-120	ID 0.471	OD 1.502	Thickness 0.12	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6279-063	ID 0.533	OD 2.0	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-628-050	ID 0.144	OD 0.563	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6281-021	ID 0.15	OD 0.28	Thickness 0.021	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6284-077	ID 0.323	OD 0.905	Thickness 0.077	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6285-074	ID 0.355	OD 0.987	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6286-076	ID 0.518	OD 0.999	Thickness 0.076	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6287-108	ID 0.533	OD 1.061	Thickness 0.108	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6288-078	ID 0.597	OD 1.156	Thickness 0.078	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-629-050	ID 0.144	OD 0.625	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6291-061	ID 0.141	OD 0.375	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6292-036	ID 0.318	OD 0.433	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6293-063	ID 0.533	OD 1.0	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6294-182	ID 0.408	OD 1.124	Thickness 0.182	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6295-245	ID 0.814	OD 1.747	Thickness 0.245	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6296-119	ID 0.751	OD 1.965	Thickness 0.119	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6297-020	ID 0.318	OD 0.552	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6298-020	ID 0.381	OD 0.561	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6299-062	ID 0.19	OD 0.626	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6302-060	ID 0.283	OD 1.122	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6303-022	ID 0.286	OD 0.516	Thickness 0.022	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6304-061	ID 0.203	OD 0.531	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6305-078	ID 0.223	OD 0.555	Thickness 0.078	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.