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

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 951–1000 of 1,345 products

SKU ID OD Thickness Material Drawing Quantity

NAS1149CN032R

ID 0.068
OD 0.188
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN216B

ID 0.099
OD 0.25
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN216R

ID 0.099
OD 0.25
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN232R

ID 0.099
OD 0.25
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN316B

ID 0.105
OD 0.25
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN316R

ID 0.105
OD 0.25
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN332B

ID 0.105
OD 0.25
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN332R

ID 0.105
OD 0.25
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN416B

ID 0.125
OD 0.312
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN416R

ID 0.125
OD 0.312
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN432B

ID 0.125
OD 0.312
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN432R

ID 0.125
OD 0.312
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN516R

ID 0.14
OD 0.438
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN532B

ID 0.14
OD 0.438
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN532R

ID 0.14
OD 0.438
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN542R

ID 0.14
OD 0.438
Thickness 0.042
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN616B

ID 0.149
OD 0.375
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN616R

ID 0.149
OD 0.375
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN632B

ID 0.149
OD 0.375
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN632R

ID 0.149
OD 0.375
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN816B

ID 0.174
OD 0.375
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN816R

ID 0.174
OD 0.375
Thickness 0.016
Material 301 SS 1/4 HD AMS5517
Drawing REV 7
Quantity

NAS1149CN832B

ID 0.174
OD 0.375
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN832R

ID 0.174
OD 0.375
Thickness 0.032
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN949B

ID 0.188
OD 0.5
Thickness 0.049
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149CN949R

ID 0.188
OD 0.5
Thickness 0.049
Material 301/302/304 A AMS5901,5516,5513
Drawing REV 7
Quantity

NAS1149D0316H

ID 0.203
OD 0.438
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0316J

ID 0.203
OD 0.438
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0332H

ID 0.203
OD 0.438
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0332J

ID 0.203
OD 0.438
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0363H

ID 0.203
OD 0.438
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0363J

ID 0.203
OD 0.438
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0416H

ID 0.265
OD 0.5
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0416J

ID 0.265
OD 0.5
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0432H

ID 0.265
OD 0.5
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0432J

ID 0.265
OD 0.5
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0463H

ID 0.265
OD 0.5
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0463J

ID 0.265
OD 0.5
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0516H

ID 0.328
OD 0.562
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0516J

ID 0.328
OD 0.562
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0532H

ID 0.328
OD 0.562
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0532J

ID 0.328
OD 0.562
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0563H

ID 0.328
OD 0.562
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0563J

ID 0.328
OD 0.562
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0616H

ID 0.39
OD 0.625
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0616J

ID 0.39
OD 0.625
Thickness 0.016
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0632H

ID 0.39
OD 0.625
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0632J

ID 0.39
OD 0.625
Thickness 0.032
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0663H

ID 0.39
OD 0.625
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
Quantity

NAS1149D0663J

ID 0.39
OD 0.625
Thickness 0.063
Material 2024 T3 ALCLAD AMS QQ-A-250/5
Drawing REV 7
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.