NAS1149 Washers - Mil-Spec Aerospace Flat Washers

NAS1149 aerospace flat washers are manufactured to National Aerospace Standard specification NAS1149 in carbon steel, stainless steel, aluminum, brass, and copper for use in military and aerospace fastener assemblies requiring mil-spec compliance. Superior Washer stocks NAS1149 washers across the full series and size range with material certifications and DFARS documentation available.

We stock all major NAS1149 series including popular part numbers such as NAS1149F0432P, NAS1149C0316R, NAS1149FN832P, NAS1149C0563R, NAS1149CN416R, NAS1149CN432R, NAS1149CN816R, NAS1149C0863R, NAS1149F0316P, and NAS1149C0832R, and many more. All NAS1149 washers are produced in the U.S.A. under our ISO 9001:2015 certified QMS with DFARS documentation available upon request.

NAS1149B, NAS1149C, NAS1149D, and NAS1149F series in stock
Carbon steel, stainless steel, aluminum, brass, and copper variants available
DFARS documentation available
ISO 9001:2015 certified | Made in the U.S.A.

Showing 251–290 of 290 products

SKU	ID	OD	Thickness	Material	Drawing	Quantity
NAS1149F2116P	ID 1.328	OD 2.062	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2132P	ID 1.328	OD 2.062	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2190P	ID 1.328	OD 2.062	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2216P	ID 1.39	OD 2.125	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2232P	ID 1.39	OD 2.125	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2290P	ID 1.39	OD 2.125	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2416P	ID 1.515	OD 2.25	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2432P	ID 1.515	OD 2.25	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2490P	ID 1.515	OD 2.25	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2616P	ID 1.64	OD 2.375	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2632P	ID 1.64	OD 2.375	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F2690P	ID 1.64	OD 2.375	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3016P	ID 1.89	OD 2.625	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3032P	ID 1.89	OD 2.625	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3090P	ID 1.89	OD 2.625	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3616P	ID 2.265	OD 3.0	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3632P	ID 2.265	OD 3.0	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F3690P	ID 2.265	OD 3.0	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F4032P	ID 2.515	OD 3.25	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149F4090P	ID 2.515	OD 3.25	Thickness 0.09	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN016P	ID 0.068	OD 0.188	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN032P	ID 0.068	OD 0.188	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN216P	ID 0.099	OD 0.25	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN232P	ID 0.099	OD 0.25	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN316P	ID 0.105	OD 0.25	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN332P	ID 0.105	OD 0.25	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN416B	ID 0.125	OD 0.312	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN416P	ID 0.125	OD 0.312	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN432P	ID 0.125	OD 0.312	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN516P	ID 0.14	OD 0.438	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN532P	ID 0.14	OD 0.438	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN542P	ID 0.14	OD 0.438	Thickness 0.042	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN616B	ID 0.149	OD 0.375	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN616P	ID 0.149	OD 0.375	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN632B	ID 0.149	OD 0.375	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN632P	ID 0.149	OD 0.375	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN816P	ID 0.174	OD 0.375	Thickness 0.016	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN832B	ID 0.174	OD 0.375	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN832P	ID 0.174	OD 0.375	Thickness 0.032	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity
NAS1149FN949P	ID 0.188	OD 0.5	Thickness 0.049	Material 1020 STEEL AMS5046	Drawing REV 8	Quantity

See the NAS1149 spec for drawing revision, material cross-references, size range, and DFARS status by material. NAS1149 is one of the highest-volume aerospace flat washer specifications Superior Washer produces, available in five materials across four series to cover the full range of mil-spec fastener assembly requirements. Superior Washer specializes in bulk and large-quantity NAS1149 washer orders, with the inventory depth and production capacity to support high-volume defense and aerospace contracts. NAS1149 washers are part of Superior Washer's complete range of military flat washers. Related specifications: AN960 and MS15795.

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 carbon steel, corrosion-resistant stainless steel, aluminum, brass, and copper. The material is encoded in the final letter of the part number. DFARS-compliant material certifications are available for all configurations upon request.

What is the NAS1149 part number structure?

A NAS1149 part number combines a series letter, a four-digit size code, and a material suffix letter. For example, NAS1149F0432P identifies the F series, a specific diameter and thickness, and phosphate-coated carbon steel. NAS1149C0316R identifies the C series in corrosion-resistant stainless. Contact us to confirm availability for a specific configuration.

What NAS1149 series do you stock?

Superior Washer stocks all four major NAS1149 series: B, C, D, and F, covering plain and countersunk configurations across the full range of materials and sizes. With 280 or more configurations available, contact us for sizes or part numbers not shown in the catalog.

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

Yes. All NAS1149 washers are manufactured at our U.S. facilities in Hauppauge, NY and Rock Hill, SC under our ISO 9001:2015 certified Quality Management System. Material certifications and DFARS documentation are available upon request by material variant.

Can you fulfill bulk and large-quantity NAS1149 washer orders?

Yes. Superior Washer specializes in bulk and large-quantity NAS1149 washer orders for defense contractors, aerospace OEMs, and industrial distributors. With extensive raw material inventory and more than 100 power presses across two U.S. manufacturing facilities, we have the production capacity to fulfill high-volume orders across all NAS1149 series and materials. Contact us with your part number, quantity, and certification requirements for a bulk order quote.

NAS1149 Washers - Mil-Spec Aerospace Flat Washers