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 51–100 of 4,975 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
650-1065-018	ID 0.179	OD 0.343	Thickness 0.018	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1066-032	ID 0.179	OD 0.35	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1067-030	ID 0.179	OD 0.366	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1068-036	ID 0.179	OD 0.376	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1069-030	ID 0.179	OD 0.437	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1070-040	ID 0.179	OD 0.506	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1071-040	ID 0.179	OD 0.567	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1072-060	ID 0.179	OD 0.626	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1073-032	ID 0.18	OD 0.337	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1074-036	ID 0.18	OD 0.498	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1075-062	ID 0.18	OD 0.635	Thickness 0.062	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1076-030	ID 0.18	OD 0.75	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1077-033	ID 0.181	OD 0.297	Thickness 0.033	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1078-015	ID 0.181	OD 0.342	Thickness 0.015	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1079-035	ID 0.181	OD 0.374	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1080-040	ID 0.181	OD 0.5	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1081-060	ID 0.181	OD 0.531	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1082-078	ID 0.181	OD 0.556	Thickness 0.078	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1084-045	ID 0.182	OD 0.315	Thickness 0.045	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1085-018	ID 0.182	OD 0.328	Thickness 0.018	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1086-040	ID 0.182	OD 0.356	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1087-040	ID 0.182	OD 0.472	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1088-060	ID 0.182	OD 0.532	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1090-032	ID 0.183	OD 0.379	Thickness 0.032	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1091-037	ID 0.183	OD 0.529	Thickness 0.037	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1092-087	ID 0.183	OD 0.631	Thickness 0.087	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1093-030	ID 0.184	OD 0.311	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1094-064	ID 0.184	OD 0.432	Thickness 0.064	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1095-040	ID 0.184	OD 0.439	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1096-031	ID 0.184	OD 0.471	Thickness 0.031	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1097-034	ID 0.184	OD 0.501	Thickness 0.034	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1098-093	ID 0.184	OD 0.567	Thickness 0.093	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1099-036	ID 0.184	OD 0.625	Thickness 0.036	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1100-042	ID 0.185	OD 0.312	Thickness 0.042	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1101-040	ID 0.185	OD 0.317	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1102-020	ID 0.185	OD 0.376	Thickness 0.02	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1103-030	ID 0.185	OD 0.401	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1104-040	ID 0.185	OD 0.5	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1105-040	ID 0.186	OD 0.281	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1106-040	ID 0.186	OD 0.372	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1107-040	ID 0.186	OD 0.41	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1108-005	ID 0.186	OD 0.497	Thickness 0.005	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1109-030	ID 0.186	OD 0.503	Thickness 0.03	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1110-060	ID 0.186	OD 0.63	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1112-048	ID 0.186	OD 0.877	Thickness 0.048	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1113-035	ID 0.187	OD 0.32	Thickness 0.035	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1114-040	ID 0.187	OD 0.381	Thickness 0.04	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1115-060	ID 0.187	OD 0.393	Thickness 0.06	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1116-050	ID 0.187	OD 0.439	Thickness 0.05	Material Steel Low Carbon	ID TOL +-.005	OD TOL +-.005	Quantity
650-1117-030	ID 0.187	OD 0.47	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.