NAS1149 Washers - Mil-Spec Aerospace Flat Washers

NAS1149 washers are widely specified military and aerospace washers designed to provide even load distribution and protect fastener bearing surfaces in demanding military applications. Superior Washer & Gasket Corp manufactures NAS1149 washers from DFARS-compliant materials with full material certifications and traceability for defense and aerospace procurement.

As an ISO 9001:2015 certified manufacturer, we produce NAS1149 military flat washers with precise dimensional control to meet National Aerospace Standard requirements. Our domestic manufacturing ensures Buy American and DFARS compliance, with documentation to support regulated procurement. All products are made in the U.S.A.

NAS1149 washers per National Aerospace Standards
DFARS-compliant materials with certifications
ISO 9001:2015 certified quality management
Complete documentation for aerospace and defense
Made in the U.S.A.

Showing 51–100 of 290 products

SKU	ID	OD	Thickness	Material	Drawing	Quantity
NAS1149C0963R	ID 0.578	OD 1.062	Thickness 0.063	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1032R	ID 0.64	OD 1.188	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1232R	ID 0.765	OD 1.312	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1290B	ID 0.765	OD 1.312	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1290R	ID 0.765	OD 1.312	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1416R	ID 0.89	OD 1.5	Thickness 0.016	Material 301 SS 1/4 HD AMS5517	Drawing REV 7	Quantity
NAS1149C1432R	ID 0.89	OD 1.5	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1490B	ID 0.89	OD 1.5	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1490R	ID 0.89	OD 1.5	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1632B	ID 1.015	OD 1.75	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1632R	ID 1.015	OD 1.75	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1690B	ID 1.015	OD 1.75	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1690R	ID 1.015	OD 1.75	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1732B	ID 1.078	OD 1.812	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1732R	ID 1.078	OD 1.812	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1790R	ID 1.078	OD 1.812	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1832R	ID 1.14	OD 1.875	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C1890R	ID 1.14	OD 1.875	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2032R	ID 1.265	OD 2.0	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2090R	ID 1.265	OD 2.0	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2190R	ID 1.328	OD 2.062	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2216R	ID 1.39	OD 2.125	Thickness 0.016	Material 301 SS 1/4 HD AMS5517	Drawing REV 7	Quantity
NAS1149C2432R	ID 1.515	OD 2.25	Thickness 0.032	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2490R	ID 1.515	OD 2.25	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C2690R	ID 1.64	OD 2.375	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149C3690R	ID 2.265	OD 3.0	Thickness 0.09	Material 301/302/304 A AMS5901,5516,5513	Drawing REV 7	Quantity
NAS1149CN016R	ID 0.068	OD 0.188	Thickness 0.016	Material 301 SS 1/4 HD AMS5517	Drawing REV 7	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

NAS1149 Military Washers Frequently Asked Questions

What are NAS1149 washers?

NAS1149 washers are mil-spec flat washers manufactured to National Aerospace Standard (NAS) specification NAS1149. They are among the most widely used aerospace standard washers, designed to provide even load distribution and protect fastener bearing surfaces in demanding military and aerospace applications.

What materials are NAS1149 washers available in?

NAS1149 washers are available in a wide range of materials including steel, stainless steel, aluminum, brass, copper, and monel. The material and dimensions are encoded in the full part number.

What drawing revision are your NAS1149 washers manufactured to?

Superior Washer NAS1149 washers are manufactured to REV 7 of the NAS1149 National Aerospace Standard specification.

Are your NAS1149 washers made in the USA with DFARS-compliant materials?

Yes. All NAS1149 washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System, audited by DNV. NAS1149 washers are available in multiple materials with different DFARS implications. Carbon steel, aluminum, brass, and copper variants are exempt from DFARS specialty metal restrictions. Stainless steel and monel variants are DFARS specialty metals and are sourced from the United States or qualifying countries in compliance with DFARS requirements. Material certifications and DFARS compliance documentation are available upon request.

NAS1149 washers are part of Superior Washer's extensive catalog of military flat washers manufactured to NAS, MS, and AN standards for defense and aerospace procurement.

NAS1149 Washers - Mil-Spec Aerospace Flat Washers