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

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

Yes. 'Military washer,' 'mil-spec washer,' 'milspec washer,' and 'military flat washer' all refer to washers manufactured to documented military or aerospace procurement standards such as AN (Aeronautical Standard), MS (Military Standard), or NAS (National Aerospace Standard). The terms are used interchangeably in defense and aerospace procurement.

Q: What standards do your military washers adhere to?

Superior Washer manufactures to three primary standard families: AN (Aeronautical Standards), MS (Military Standards), and NAS (National Aerospace Standards). Specific part families include AN901, AN960, AN961, AN970, MS14151, MS15795, MS16212, MS20002, MS21206, MS21299, MS27183, MS51412, MS51496, MS51859, MS91124, MS9321, MS9549, NAS1149, NAS1515, NAS1587, and NAS620.

Q: Are your military washers made in the USA?

Yes. All military washers are manufactured in the United States at our facilities in Hauppauge, NY (CAGE Code: 1L160) and Rock Hill, SC (CAGE Code: 4WUG7).

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 1201–1250 of 1,345 products

SKU	ID	OD	Thickness	Drawing	Quantity
NAS1515-H8L	ID 0.515	OD 0.875	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-H9	ID 0.578	OD 1.062	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-H9H	ID 0.578	OD 1.062	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-H9L	ID 0.578	OD 1.062	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M02	ID 0.105	OD 0.25	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M02L	ID 0.105	OD 0.25	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M04	ID 0.125	OD 0.312	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M04L	ID 0.125	OD 0.312	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M06	ID 0.149	OD 0.375	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M06L	ID 0.149	OD 0.375	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M08	ID 0.174	OD 0.375	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M08L	ID 0.174	OD 0.375	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M10	ID 0.64	OD 1.188	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M10H	ID 0.64	OD 1.188	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M10L	ID 0.64	OD 1.188	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M12	ID 0.765	OD 1.312	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M12H	ID 0.765	OD 1.312	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M12L	ID 0.765	OD 1.312	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M14	ID 0.89	OD 1.5	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M14H	ID 0.89	OD 1.5	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M14L	ID 0.89	OD 1.5	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M16	ID 1.015	OD 1.75	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M16H	ID 1.015	OD 1.75	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M16L	ID 1.015	OD 1.75	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M3	ID 0.203	OD 0.438	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M3H	ID 0.203	OD 0.438	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M3L	ID 0.203	OD 0.438	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M4	ID 0.265	OD 0.5	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M4H	ID 0.265	OD 0.5	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M4L	ID 0.265	OD 0.5	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M5	ID 0.328	OD 0.562	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M5H	ID 0.328	OD 0.562	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M5L	ID 0.328	OD 0.562	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M6	ID 0.39	OD 0.625	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M6H	ID 0.39	OD 0.625	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M6L	ID 0.39	OD 0.625	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M7	ID 0.453	OD 0.75	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M7H	ID 0.453	OD 0.75	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M7L	ID 0.453	OD 0.75	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M8	ID 0.515	OD 0.875	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M8H	ID 0.515	OD 0.875	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M8L	ID 0.515	OD 0.875	Thickness 0.031	Drawing REV 6	Quantity
NAS1515-M9	ID 0.578	OD 1.062	Thickness 0.063	Drawing REV 6	Quantity
NAS1515-M9H	ID 0.578	OD 1.062	Thickness 0.094	Drawing REV 6	Quantity
NAS1515-M9L	ID 0.578	OD 1.062	Thickness 0.031	Drawing REV 6	Quantity
NAS1587-10	ID 0.631	OD 1.062	Thickness 0.062	Drawing REV 5 STAMPED W/PN	Quantity
NAS1587-10L	ID 0.631	OD 1.062	Thickness 0.032	Drawing REV 5 STAMPED W/PN	Quantity
NAS1587-12	ID 0.757	OD 1.25	Thickness 0.062	Drawing REV 5 STAMPED W/PN	Quantity
NAS1587-12L	ID 0.884	OD 1.437	Thickness 0.032	Drawing REV 5 STAMPED W/PN	Quantity
NAS1587-14	ID 0.884	OD 1.437	Thickness 0.062	Drawing REV 5 STAMPED W/PN	Quantity

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. "Military washer," "mil-spec washer," "milspec washer," and "military flat washer" all refer to washers manufactured to meet documented military or aerospace procurement standards, such as AN (Aeronautical Standard), MS (Military Standard), or NAS (National Aerospace Standard). The terms are used interchangeably in defense and aerospace procurement. What matters is that the part number traces back to a published specification defining exact dimensions, material, and finish requirements.

What standards do your military washers adhere to?

Superior Washer manufactures to three primary military and aerospace standard families: AN (Aeronautical Standards), MS (Military Standards), and NAS (National Aerospace Standards). Within those families we produce to specific drawing numbers including AN901, AN960, AN961, AN970, MS14151, MS15795, MS16212, MS20002, MS21206, MS21299, MS27183, MS51412, MS51496, MS51859, MS91124, MS9321, MS9549, NAS1149, NAS1515, NAS1587, and NAS620.

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 (QMS). It requires a manufacturer to document, implement, and continuously improve processes that ensure products consistently meet customer and regulatory requirements. For military and aerospace procurement, ISO 9001:2015 certification signals that our manufacturing and inspection processes are regularly audited by an independent third party, in our case, DNV, confirming compliance. All Superior Washer military products are manufactured under this certified QMS.

Are you DFARS compliant?

Yes. We provide DFARS compliance documentation for our military washers. However, DFARS specialty metal restrictions do not apply to all materials. Many of our most common washer materials including 1008/1010 and 1020 low carbon steel, brass alloy 260, copper alloy 110, aluminum, and nylon are exempt from DFARS specialty metal requirements and are commercially available without restriction. Materials that do fall under DFARS specialty metal rules (such as stainless steel, titanium, and nickel alloys) are sourced from the United States or qualifying countries. Material certifications and DFARS compliance documentation are available upon request.

Are your military washers made in the USA?

Yes. All military washers we offer are manufactured in the United States at our facilities in Hauppauge, NY and Rock Hill, SC. Our CAGE codes are 1L160 (NY) and 4WUG7 (SC).

Can you provide material certifications?

Yes. Full material certifications are available for all military washers. These certifications provide traceability from raw material to finished part, supporting government and prime contractor procurement requirements.

Do you offer custom or non-standard military washers?

Yes. While our catalog covers the most common mil-spec part numbers in stock, we also produce custom washers to special dimensions or materials. Contact us for a quote on non-catalog configurations.

How do I request a quote for military washers?

Use the Quick Quote form on our website or call our NY office at (631) 273-8282 or our SC office at (803) 366-3250. Include the part number, quantity, and any certification requirements and we will respond promptly.

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