Brass Flat Washers - Corrosion-Resistant Metal Washers

Brass flat washers provide natural corrosion resistance, electrical conductivity, and an attractive appearance for use in plumbing, marine, electrical, and decorative fastener applications. Superior Washer & Gasket Corp manufactures brass washers in a wide range of standard and custom sizes, delivering consistent dimensional quality from our ISO 9001:2015 certified facility.

We supply brass flat washers from stock inventory and produce custom brass washers to your exact OD, ID, and thickness specifications. All metal washers are made in the U.S.A. with full material traceability and competitive pricing for prototype and production orders.

Natural corrosion resistance and conductivity
Wide range of standard brass flat washer sizes in stock
Custom brass washers to specification
ISO 9001:2015 certified quality control
Made in the U.S.A.

Showing 651–700 of 1,137 products

SKU	ID	OD	Thickness	Material	ID TOL	OD TOL	Quantity
560-545-103	ID 0.347	OD 0.812	Thickness 0.103	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-546-057	ID 0.353	OD 0.687	Thickness 0.057	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-547-004	ID 0.355	OD 0.53	Thickness 0.004	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-548-030	ID 0.356	OD 0.618	Thickness 0.03	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-549-005	ID 0.36	OD 0.484	Thickness 0.005	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-55-021	ID 0.066	OD 0.17	Thickness 0.021	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-550-061	ID 0.363	OD 0.75	Thickness 0.061	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-551-041	ID 0.364	OD 0.496	Thickness 0.041	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-552-063	ID 0.364	OD 0.687	Thickness 0.063	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-553-010	ID 0.367	OD 0.478	Thickness 0.01	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-554-020	ID 0.373	OD 0.567	Thickness 0.02	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-555-025	ID 0.376	OD 0.621	Thickness 0.025	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-556-016	ID 0.376	OD 0.685	Thickness 0.016	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-557-040	ID 0.377	OD 0.505	Thickness 0.04	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-558-020	ID 0.377	OD 0.679	Thickness 0.02	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-559-080	ID 0.377	OD 0.937	Thickness 0.08	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-56-021	ID 0.066	OD 0.186	Thickness 0.021	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-560-005	ID 0.377	OD 0.998	Thickness 0.005	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-561-010	ID 0.378	OD 0.497	Thickness 0.01	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-562-016	ID 0.378	OD 0.56	Thickness 0.016	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-563-064	ID 0.378	OD 0.59	Thickness 0.064	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-564-040	ID 0.378	OD 0.748	Thickness 0.04	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-565-063	ID 0.378	OD 0.749	Thickness 0.063	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-566-032	ID 0.378	OD 0.812	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-567-122	ID 0.378	OD 0.873	Thickness 0.122	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-568-051	ID 0.379	OD 0.558	Thickness 0.051	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-569-016	ID 0.379	OD 0.622	Thickness 0.016	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-57-010	ID 0.067	OD 0.107	Thickness 0.01	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-570-026	ID 0.379	OD 0.683	Thickness 0.026	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-571-015	ID 0.379	OD 0.688	Thickness 0.015	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-572-031	ID 0.379	OD 0.709	Thickness 0.031	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-573-032	ID 0.379	OD 0.889	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-574-019	ID 0.381	OD 0.496	Thickness 0.019	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-575-063	ID 0.383	OD 0.749	Thickness 0.063	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-576-062	ID 0.383	OD 0.873	Thickness 0.062	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-577-032	ID 0.384	OD 0.596	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-578-064	ID 0.384	OD 0.659	Thickness 0.064	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-579-020	ID 0.385	OD 0.56	Thickness 0.02	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-58-020	ID 0.067	OD 0.243	Thickness 0.02	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-580-061	ID 0.387	OD 0.623	Thickness 0.061	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-581-041	ID 0.387	OD 0.998	Thickness 0.041	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-582-005	ID 0.391	OD 0.627	Thickness 0.005	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-583-010	ID 0.392	OD 0.484	Thickness 0.01	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-584-032	ID 0.393	OD 0.66	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-585-016	ID 0.393	OD 0.687	Thickness 0.016	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-586-032	ID 0.393	OD 0.689	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-587-020	ID 0.393	OD 0.748	Thickness 0.02	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-588-060	ID 0.393	OD 0.811	Thickness 0.06	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-589-021	ID 0.394	OD 0.621	Thickness 0.021	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity
560-59-032	ID 0.068	OD 0.138	Thickness 0.032	Material Brass	ID TOL +-.005	OD TOL +-.005	Quantity

Brass Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about brass flat washers.

What are brass flat washers?
Brass flat washers are corrosion-resistant metal washers manufactured from copper-zinc alloy (brass). They provide natural corrosion resistance, electrical conductivity, and an attractive appearance, making them well suited for plumbing, marine, electrical, and decorative fastener applications. Superior Washer stocks over 1,100 brass flat washer sizes and produces custom configurations to specification.

What are the main advantages of brass washers over steel washers?
Brass washers are naturally corrosion resistant without plating, electrically conductive, non-sparking, and non-magnetic. They are also more visually appealing than zinc-plated steel, making them a common choice in decorative or visible assemblies. In plumbing and marine environments, brass resists dezincification better than many other alloys.

What brass alloy do you use for flat washers?
Superior Washer brass flat washers are typically manufactured from Brass Alloy 260 (cartridge brass, 70% copper / 30% zinc), which offers the best balance of formability, corrosion resistance, and strength for washer applications.

Can you produce custom brass flat washers?
Yes. We manufacture custom brass washers to your exact OD, ID, and thickness specifications, from prototype quantities through full production runs. Contact us via the Quick Quote form or by phone.

Are your brass flat washers made in the USA?
Yes. All brass flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System with full material traceability. Material certifications are available upon request.

Superior Washer also stocks flat washers in aluminum, stainless steel, and other materials to fit a range of applications. Explore our full flat washers collection to find the right option for your project.