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 4701–4750 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-684-040	ID 0.149	OD 0.467	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-686-062	ID 0.149	OD 0.5	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-687-031	ID 0.149	OD 0.559	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-688-049	ID 0.149	OD 0.621	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-690-016	ID 0.15	OD 0.248	Thickness 0.016	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-691-020	ID 0.15	OD 0.25	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-692-025	ID 0.15	OD 0.26	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-693-049	ID 0.15	OD 0.268	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-694-020	ID 0.15	OD 0.302	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-695-020	ID 0.15	OD 0.311	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-696-025	ID 0.15	OD 0.314	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-697-031	ID 0.15	OD 0.328	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-698-040	ID 0.15	OD 0.363	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-699-036	ID 0.15	OD 0.625	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-701-031	ID 0.151	OD 0.25	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-702-031	ID 0.151	OD 0.269	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-703-030	ID 0.151	OD 0.297	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-704-030	ID 0.151	OD 0.312	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-705-031	ID 0.151	OD 0.315	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-706-031	ID 0.151	OD 0.329	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-707-030	ID 0.151	OD 0.365	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-708-031	ID 0.151	OD 0.373	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-709-030	ID 0.151	OD 0.377	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-710-035	ID 0.151	OD 0.498	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-711-025	ID 0.151	OD 0.5	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-712-061	ID 0.151	OD 0.625	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-713-048	ID 0.151	OD 0.752	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-714-040	ID 0.152	OD 0.239	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-715-020	ID 0.152	OD 0.254	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-716-030	ID 0.152	OD 0.261	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-717-030	ID 0.152	OD 0.282	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-718-020	ID 0.152	OD 0.303	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-719-040	ID 0.152	OD 0.313	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-720-025	ID 0.152	OD 0.335	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-721-030	ID 0.152	OD 0.372	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-722-050	ID 0.152	OD 0.392	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-724-028	ID 0.153	OD 0.31	Thickness 0.028	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-725-078	ID 0.153	OD 0.343	Thickness 0.078	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-726-009	ID 0.153	OD 0.353	Thickness 0.009	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-727-015	ID 0.153	OD 0.375	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-728-010	ID 0.153	OD 0.38	Thickness 0.01	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-729-040	ID 0.153	OD 0.432	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-730-040	ID 0.153	OD 0.438	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-731-063	ID 0.153	OD 0.75	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-733-046	ID 0.154	OD 0.25	Thickness 0.046	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-734-047	ID 0.154	OD 0.467	Thickness 0.047	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-735-040	ID 0.154	OD 0.562	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-738-031	ID 0.155	OD 0.308	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-739-031	ID 0.155	OD 0.311	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-740-015	ID 0.155	OD 0.312	Thickness 0.015	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.