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 4501–4550 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-6372-047	ID 1.039	OD 1.47	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6373-103	ID 0.883	OD 1.64	Thickness 0.103	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6374-095	ID 0.534	OD 1.752	Thickness 0.095	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6376-040	ID 0.139	OD 0.279	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6377-059	ID 0.125	OD 0.375	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6378-062	ID 0.205	OD 0.375	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-638-030	ID 0.145	OD 0.313	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6380-016	ID 0.267	OD 0.437	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6382-029	ID 0.331	OD 0.557	Thickness 0.029	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6383-056	ID 0.196	OD 0.589	Thickness 0.056	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6385-062	ID 0.261	OD 0.746	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6388-063	ID 0.641	OD 0.933	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6389-062	ID 0.313	OD 1.125	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-639-047	ID 0.145	OD 0.328	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6391-116	ID 0.3786	OD 1.218	Thickness 0.116	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6392-062	ID 0.765	OD 1.248	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6393-118	ID 0.403	OD 1.372	Thickness 0.118	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6394-151	ID 0.815	OD 1.472	Thickness 0.151	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6395-089	ID 0.406	OD 1.499	Thickness 0.089	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6397-121	ID 0.523	OD 1.503	Thickness 0.121	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6398-125	ID 0.69	OD 1.94	Thickness 0.125	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-640-016	ID 0.145	OD 0.375	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6402-060	ID 0.188	OD 0.436	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6403-040	ID 0.158	OD 0.437	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6404-076	ID 0.533	OD 1.065	Thickness 0.076	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6405-031	ID 0.266	OD 0.626	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6406-058	ID 0.407	OD 0.646	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6407-072	ID 0.355	OD 0.725	Thickness 0.072	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6408-074	ID 0.354	OD 0.749	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6409-022	ID 0.193	OD 0.561	Thickness 0.022	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-641-040	ID 0.145	OD 0.379	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6411-036	ID 0.237	OD 0.525	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6412-060	ID 0.185	OD 0.621	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6414-099	ID 0.819	OD 2.005	Thickness 0.099	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6415-060	ID 1.378	OD 2.247	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-642-047	ID 0.145	OD 0.504	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6420-012	ID 0.193	OD 0.289	Thickness 0.012	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6421-047	ID 0.222	OD 0.333	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6422-032	ID 0.38	OD 0.53	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6423-032	ID 0.17	OD 0.498	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6424-032	ID 0.188	OD 0.438	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6425-048	ID 0.156	OD 0.374	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6426-057	ID 0.197	OD 0.374	Thickness 0.057	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6427-010	ID 0.128	OD 0.381	Thickness 0.01	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6428-031	ID 0.621	OD 1.108	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-643-061	ID 0.145	OD 0.568	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6430-060	ID 0.265	OD 0.562	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6432-063	ID 0.385	OD 0.627	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6434-039	ID 0.172	OD 0.312	Thickness 0.039	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6435-030	ID 0.17	OD 0.377	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.