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 4451–4500 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-6306-075	ID 0.331	OD 0.625	Thickness 0.075	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6307-059	ID 0.393	OD 0.625	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6308-061	ID 0.195	OD 0.627	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6310-059	ID 0.348	OD 0.876	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6311-145	ID 0.534	OD 0.998	Thickness 0.145	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6313-062	ID 0.47	OD 1.124	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6314-120	ID 0.347	OD 1.495	Thickness 0.12	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6315-059	ID 0.382	OD 0.579	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6316-020	ID 0.39	OD 0.624	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6317-056	ID 0.265	OD 0.731	Thickness 0.056	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6318-048	ID 0.517	OD 0.999	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6319-058	ID 0.532	OD 1.062	Thickness 0.058	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6320-060	ID 0.388	OD 1.121	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6321-062	ID 0.387	OD 1.124	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6322-102	ID 0.812	OD 1.251	Thickness 0.102	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6329-020	ID 0.148	OD 0.309	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6330-074	ID 0.381	OD 0.612	Thickness 0.074	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6332-075	ID 0.311	OD 0.748	Thickness 0.075	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6333-032	ID 0.453	OD 0.75	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6334-025	ID 0.517	OD 0.751	Thickness 0.025	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6335-059	ID 0.533	OD 0.814	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6336-037	ID 0.441	OD 0.879	Thickness 0.037	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6337-061	ID 0.475	OD 0.928	Thickness 0.061	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6339-117	ID 1.105	OD 1.685	Thickness 0.117	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6340-130	ID 0.438	OD 1.773	Thickness 0.13	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6342-182	ID 1.261	OD 2.246	Thickness 0.182	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6346-115	ID 0.563	OD 2.501	Thickness 0.115	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6347-020	ID 0.203	OD 0.39	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6349-005	ID 0.255	OD 0.503	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-635-060	ID 0.145	OD 0.269	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6350-036	ID 0.219	OD 0.609	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6351-086	ID 0.316	OD 0.624	Thickness 0.086	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6352-049	ID 0.391	OD 0.626	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6353-049	ID 0.326	OD 0.687	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6354-062	ID 0.222	OD 0.688	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6355-031	ID 0.261	OD 0.749	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6356-031	ID 0.38	OD 0.75	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6357-120	ID 0.408	OD 0.887	Thickness 0.12	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6358-076	ID 0.518	OD 0.936	Thickness 0.076	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6359-092	ID 0.518	OD 0.936	Thickness 0.092	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-636-020	ID 0.145	OD 0.277	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6360-059	ID 0.253	OD 1.0	Thickness 0.059	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6363-030	ID 0.815	OD 1.988	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6364-093	ID 1.252	OD 1.999	Thickness 0.093	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6365-063	ID 0.347	OD 0.562	Thickness 0.063	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6366-049	ID 0.269	OD 0.563	Thickness 0.049	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6367-060	ID 0.176	OD 0.625	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6369-120	ID 0.641	OD 1.123	Thickness 0.12	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-637-030	ID 0.145	OD 0.282	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-6370-062	ID 0.351	OD 1.128	Thickness 0.062	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.