NAS620 Washers - Aerospace-Grade Military Specification Washers

NAS620 washers are aerospace and military specification washers manufactured to National Aerospace Standards for use in critical defense and commercial aerospace fastener assemblies. Superior Washer & Gasket Corp produces NAS620 washers from DFARS-compliant materials with complete material certifications for regulated procurement.

Our ISO 9001:2015 certified quality management system governs production of all NAS-spec washers including NAS620, ensuring dimensional accuracy and material conformance. All products are manufactured in the U.S.A. with full traceability and documentation for government and prime contractor purchasing.

NAS620 washers to National Aerospace Standards
DFARS compliance and certifications available
ISO 9001:2015 certified manufacturing
Full quality documentation for aerospace procurement
Made in the U.S.A.

Showing 1–50 of 77 products

SKU	ID	OD	Thickness	Drawing	Quantity
NAS620-0	ID 0.063	OD 0.099	Thickness 0.016	Drawing REV 8	Quantity
NAS620-10	ID 0.195	OD 0.354	Thickness 0.063	Drawing REV 8	Quantity
NAS620-10L	ID 0.195	OD 0.354	Thickness 0.032	Drawing REV 8	Quantity
NAS620-2	ID 0.089	OD 0.149	Thickness 0.016	Drawing REV 8	Quantity
NAS620-3	ID 0.102	OD 0.18	Thickness 0.032	Drawing REV 8	Quantity
NAS620-3L	ID 0.102	OD 0.18	Thickness 0.016	Drawing REV 8	Quantity
NAS620-4	ID 0.115	OD 0.209	Thickness 0.032	Drawing REV 8	Quantity
NAS620-416	ID 0.255	OD 0.468	Thickness 0.063	Drawing REV 8	Quantity
NAS620-416L	ID 0.255	OD 0.468	Thickness 0.032	Drawing REV 8	Quantity
NAS620-4L	ID 0.115	OD 0.209	Thickness 0.016	Drawing REV 8	Quantity
NAS620-5	ID 0.128	OD 0.238	Thickness 0.032	Drawing REV 8	Quantity
NAS620-5L	ID 0.128	OD 0.238	Thickness 0.016	Drawing REV 8	Quantity
NAS620-6	ID 0.143	OD 0.267	Thickness 0.032	Drawing REV 8	Quantity
NAS620-6L	ID 0.143	OD 0.267	Thickness 0.016	Drawing REV 8	Quantity
NAS620-8	ID 0.169	OD 0.304	Thickness 0.032	Drawing REV 8	Quantity
NAS620-8L	ID 0.169	OD 0.304	Thickness 0.016	Drawing REV 8	Quantity
NAS620A0	ID 0.063	OD 0.099	Thickness 0.016	Drawing REV 8	Quantity
NAS620A10	ID 0.195	OD 0.354	Thickness 0.063	Drawing REV 8	Quantity
NAS620A10L	ID 0.195	OD 0.354	Thickness 0.032	Drawing REV 8	Quantity
NAS620A2	ID 0.089	OD 0.149	Thickness 0.016	Drawing REV 8	Quantity
NAS620A3	ID 0.102	OD 0.18	Thickness 0.032	Drawing REV 8	Quantity
NAS620A3L	ID 0.102	OD 0.18	Thickness 0.016	Drawing REV 8	Quantity
NAS620A4	ID 0.115	OD 0.209	Thickness 0.032	Drawing REV 8	Quantity
NAS620A416	ID 0.255	OD 0.468	Thickness 0.063	Drawing REV 8	Quantity
NAS620A416L	ID 0.255	OD 0.468	Thickness 0.032	Drawing REV 8	Quantity
NAS620A4L	ID 0.115	OD 0.209	Thickness 0.016	Drawing REV 8	Quantity
NAS620A5	ID 0.128	OD 0.238	Thickness 0.032	Drawing REV 8	Quantity
NAS620A5L	ID 0.128	OD 0.238	Thickness 0.016	Drawing REV 8	Quantity
NAS620A6	ID 0.143	OD 0.267	Thickness 0.032	Drawing REV 8	Quantity
NAS620A6L	ID 0.143	OD 0.267	Thickness 0.016	Drawing REV 8	Quantity
NAS620A8	ID 0.169	OD 0.304	Thickness 0.032	Drawing REV 8	Quantity
NAS620A8L	ID 0.169	OD 0.304	Thickness 0.016	Drawing REV 8	Quantity
NAS620B0	ID 0.063	OD 0.099	Thickness 0.016	Drawing REV 8	Quantity
NAS620B10	ID 0.195	OD 0.354	Thickness 0.063	Drawing REV 8	Quantity
NAS620B10L	ID 0.195	OD 0.354	Thickness 0.032	Drawing REV 8	Quantity
NAS620B2	ID 0.089	OD 0.149	Thickness 0.016	Drawing REV 8	Quantity
NAS620B3	ID 0.102	OD 0.18	Thickness 0.032	Drawing REV 8	Quantity
NAS620B3L	ID 0.102	OD 0.18	Thickness 0.016	Drawing REV 8	Quantity
NAS620B4	ID 0.115	OD 0.209	Thickness 0.032	Drawing REV 8	Quantity
NAS620B416	ID 0.255	OD 0.468	Thickness 0.063	Drawing REV 8	Quantity
NAS620B416L	ID 0.255	OD 0.468	Thickness 0.032	Drawing REV 8	Quantity
NAS620B4L	ID 0.115	OD 0.209	Thickness 0.016	Drawing REV 8	Quantity
NAS620B5	ID 0.128	OD 0.238	Thickness 0.032	Drawing REV 8	Quantity
NAS620B5L	ID 0.128	OD 0.238	Thickness 0.016	Drawing REV 8	Quantity
NAS620B6	ID 0.143	OD 0.267	Thickness 0.032	Drawing REV 8	Quantity
NAS620B6L	ID 0.143	OD 0.267	Thickness 0.016	Drawing REV 8	Quantity
NAS620B8	ID 0.169	OD 0.304	Thickness 0.032	Drawing REV 8	Quantity
NAS620B8L	ID 0.169	OD 0.304	Thickness 0.016	Drawing REV 8	Quantity
NAS620C0	ID 0.063	OD 0.099	Thickness 0.016	Drawing REV 8	Quantity
NAS620C10	ID 0.195	OD 0.354	Thickness 0.063	Drawing REV 8	Quantity

NAS620 Military Washers Frequently Asked Questions

What are NAS620 washers?

NAS620 washers are mil-spec flat washers manufactured to National Aerospace Standard (NAS) specification NAS620, a widely used general-purpose aerospace flat washer specification covering a broad range of sizes and materials for military and aerospace fastener assemblies.

What materials are NAS620 washers available in?

NAS620 washers are available in low-carbon steel, stainless steel, brass, copper, aluminum, monel, and other materials. The full part number identifies the material designation.

What drawing revision are your NAS620 washers manufactured to?

Superior Washer NAS620 washers are manufactured to REV 8 of the NAS620 National Aerospace Standard specification.

Are your NAS620 washers made in the USA with DFARS-compliant materials?

Yes. All NAS620 washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System, audited by DNV. NAS620 washers are available in multiple materials with different DFARS implications. Low-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.

NAS620 washers are one of the most widely stocked specifications in Superior Washer's full catalog of military washers manufactured to NAS, MS, and AN standards for defense and aerospace procurement.

NAS620 Washers - Aerospace-Grade Military Specification Washers