Military Washers & Mil-Spec Flat Washers - AN, MS, NAS Standards

Superior Washer & Gasket Corp is a trusted manufacturer of mil-spec washers for defense, aerospace, and government applications. Our military washers-including military flat washers, mil spec flat washers, and milspec washers-are produced to exacting AN, MS, and NAS standards, ensuring optimal performance and interchangeability in mission-critical assemblies.

As an ISO 9001:2015 certified company, we implement a rigorous Quality Management System (QMS) regularly audited for compliance. We provide full material certifications and DFARS compliance documentation. All military grade washers and military washers are manufactured in the U.S.A. from qualified materials.

Mil-spec washers to AN, MS, and NAS standards
DFARS-compliant materials and documentation
Material certifications available
ISO 9001:2015 certified QMS
100% U.S. manufactured

Showing 1–50 of 1,345 products

SKU	ID	OD	Thickness	Material	Drawing	Quantity
AN901-10A	ID 0.88	OD 1.12	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-10C	ID 0.88	OD 1.12	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-12A	ID 1.068	OD 1.37	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-12C	ID 1.068	OD 1.37	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-16A	ID 1.318	OD 1.62	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-16C	ID 1.318	OD 1.62	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-20A	ID 1.63	OD 1.87	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-20C	ID 1.63	OD 1.87	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-24A	ID 1.88	OD 2.12	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-24C	ID 1.88	OD 2.12	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-28A	ID 2.255	OD 2.495	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-28C	ID 2.255	OD 2.495	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-32A	ID 2.505	OD 2.745	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-32C	ID 2.505	OD 2.745	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-4A	ID 0.443	OD 0.683	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-4C	ID 0.443	OD 0.683	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-5A	ID 0.505	OD 0.745	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-5C	ID 0.505	OD 0.745	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-6A	ID 0.568	OD 0.808	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-6C	ID 0.568	OD 0.808	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-8A	ID 0.755	OD 0.995	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN901-8C	ID 0.755	OD 0.995	Thickness 0.048	Material Not available	Drawing REV 11	Quantity
AN960-10	ID 0.203	OD 0.438	Thickness 0.063	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-10-REV21	ID 0.203	OD 0.438	Thickness 0.063	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1016	ID 0.64	OD 1.188	Thickness 0.063	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1016-REV21	ID 0.64	OD 1.188	Thickness 0.063	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1016L	ID 0.64	OD 1.188	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1016L-REV21	ID 0.64	OD 1.188	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-10L	ID 0.203	OD 0.438	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-10L-REV21	ID 0.203	OD 0.438	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-10LL	ID 0.203	OD 0.438	Thickness 0.016	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-11	ID 0.234	OD 0.625	Thickness 0.065	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-11-REV21	ID 0.234	OD 0.625	Thickness 0.065	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1216	ID 0.765	OD 1.312	Thickness 0.09	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1216-REV21	ID 0.765	OD 1.312	Thickness 0.09	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1216L	ID 0.765	OD 1.312	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1216L-REV21	ID 0.765	OD 1.312	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1416	ID 0.89	OD 1.5	Thickness 0.09	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1416-REV21	ID 0.89	OD 1.5	Thickness 0.09	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1416L	ID 0.89	OD 1.5	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1416L-REV21	ID 0.89	OD 1.5	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1616	ID 1.015	OD 1.75	Thickness 0.09	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1616-REV21	ID 1.015	OD 1.75	Thickness 0.09	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1616L	ID 1.015	OD 1.75	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1616L-REV21	ID 1.015	OD 1.75	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1716	ID 1.078	OD 1.812	Thickness 0.09	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1716-REV21	ID 1.078	OD 1.812	Thickness 0.09	Material 1020 STEEL MIL-S-7952A	Drawing REV 21	Quantity
AN960-1716L	ID 1.078	OD 1.812	Thickness 0.032	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity
AN960-1716L-REV21	ID 1.078	OD 1.812	Thickness 0.032	Material 1020 STEEL MIL-S-7952A	Drawing Not available	Quantity
AN960-1816	ID 1.14	OD 1.875	Thickness 0.09	Material L.C. STEEL B60MAX ASTMA366	Drawing REV 18	Quantity

Superior Washer & Gasket Corp. has manufactured mil-spec flat washers for defense, aerospace, and government contractors since 1946, with two U.S.-based production facilities in Hauppauge, NY and Rock Hill, SC operating under CAGE codes 1L160 and 4WUG7. Our ISO 9001:2015 certified Quality Management System is independently audited by DNV, and we provide full material certifications with raw material traceability for every military washer order. Browse our full catalog of AN960, NAS1149, MS15795, NAS620, AN washers, MS washers, and NAS washers, or view the complete military washer catalog to find the specification you need.

As a leading washer manufacturer, we produce military washers according to precise standards and specifications. We are an ISO 9001:2015 certified company and implement, maintain, and adhere to a total Quality Management System (QMS) that is regularly audited to guarantee compliance and excellence. Our commitment to quality ensures we deliver products that meet rigorous industry requirements, including:

NAS: National Aerospace Standards
MS: Military Standards
AN: Aeronautical Standards

We can provide material certifications and DFARS compliance. We proudly assure that all of the products we offer, from standard washers to custom washers, are manufactured here in the U.S.A.

Military Washers & Mil-spec Washers FAQ

Are military washers and mil-spec washers the same thing?

Yes. The terms are used interchangeably. Military washers and mil-spec washers both refer to flat washers manufactured to a documented AN, MS, or NAS standard, where the part number traces directly to a published specification drawing. The distinction matters most for procurement: a washer called out on a drawing by specification number must match that specification exactly, not merely approximate it.

What standards do your military washers adhere to?

Superior Washer manufactures military flat washers to aeronautical standard (AN), military standard (MS), and national aerospace standard (NAS) specifications. Our catalog covers AN960, AN961, AN970, AN901, NAS1149, NAS620, NAS1515, NAS1587, MS15795, MS21206, MS51859, MS9549, and additional MS and NAS specifications.

What is ISO 9001:2015 and why does it matter for military washers?

ISO 9001:2015 is the internationally recognized standard for quality management systems. For military washer procurement, it means our processes for material sourcing, production, inspection, and documentation are independently audited by DNV to verify conformance. Every mil-spec washer we ship is produced under this certified Quality Management System, providing the process controls and documentation traceability that defense and aerospace contractors require.

Are you DFARS compliant?

Yes. We provide DFARS compliance documentation for all applicable military washer specifications. Under DFARS rules, specialty metals including stainless steel, titanium, and nickel alloys must be melted or produced in the United States or a qualifying country, and we source accordingly. Certain common materials such as carbon steel, brass, copper, aluminum, and nylon are exempt from DFARS specialty metal restrictions. We can provide the appropriate documentation for your procurement package regardless of which specification you are ordering.

Are your military washers made in the USA?

Yes. All military washers are manufactured at our U.S.-based facilities in Hauppauge, NY (CAGE code 1L160) and Rock Hill, SC (CAGE code 4WUG7). Domestic manufacturing is not an option for us, it is a requirement of our customer base and central to our ability to provide DFARS documentation and full material traceability.

Can you provide material certifications?

Yes. We provide material certifications for all military washer orders, with complete traceability from raw material to finished part. Certifications can include chemical and physical test reports, country of origin documentation, and DFARS compliance statements as required by your purchase order or contract.

Do you offer custom or non-standard military washers?

Yes. In addition to our catalog of standard AN, MS, and NAS specifications, Superior Washer manufactures custom and non-standard mil-spec washers to customer drawings and requirements. Contact us with your part number, material, quantity, and any certification requirements for a quote.

How do I request a quote for military washers?

Use the Quick Quote form on our website or call our Hauppauge, NY or Rock Hill, SC facility directly. Include the specification number or part number, required quantity, material if not called out by the specification, and any certification or DFARS documentation requirements. We respond promptly to all military washer quote requests.

Military Washers & Mil-Spec Flat Washers - AN, MS, NAS Standards