Home | NAS620 Washers - Aerospace-Grade Military Specification Washers

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.

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Showing 51–77 of 77 products

SKU ID OD Thickness Drawing Quantity

NAS620C10L

ID 0.195
OD 0.354
Thickness 0.032
Drawing REV 8
Quantity

NAS620C10LP

ID 0.195
OD 0.354
Thickness 0.032
Drawing REV 8
Quantity

NAS620C10P

ID 0.195
OD 0.354
Thickness 0.063
Drawing REV 8
Quantity

NAS620C2

ID 0.089
OD 0.149
Thickness 0.016
Drawing REV 8
Quantity

NAS620C2P

ID 0.089
OD 0.149
Thickness 0.016
Drawing REV 8
Quantity

NAS620C3

ID 0.102
OD 0.18
Thickness 0.032
Drawing REV 8
Quantity

NAS620C3L

ID 0.102
OD 0.18
Thickness 0.016
Drawing REV 8
Quantity

NAS620C4

ID 0.115
OD 0.209
Thickness 0.032
Drawing REV 8
Quantity

NAS620C416

ID 0.255
OD 0.468
Thickness 0.063
Drawing REV 8
Quantity

NAS620C416L

ID 0.255
OD 0.468
Thickness 0.032
Drawing REV 8
Quantity

NAS620C416LP

ID 0.255
OD 0.468
Thickness 0.032
Drawing REV 8
Quantity

NAS620C416P

ID 0.255
OD 0.468
Thickness 0.063
Drawing REV 8
Quantity

NAS620C4L

ID 0.115
OD 0.209
Thickness 0.016
Drawing REV 8
Quantity

NAS620C4LP

ID 0.115
OD 0.209
Thickness 0.016
Drawing REV 8
Quantity

NAS620C4P

ID 0.115
OD 0.209
Thickness 0.032
Drawing REV 8
Quantity

NAS620C5

ID 0.128
OD 0.238
Thickness 0.032
Drawing REV 8
Quantity

NAS620C5L

ID 0.128
OD 0.238
Thickness 0.016
Drawing REV 8
Quantity

NAS620C5LP

ID 0.128
OD 0.238
Thickness 0.016
Drawing REV 8
Quantity

NAS620C5P

ID 0.128
OD 0.238
Thickness 0.032
Drawing REV 8
Quantity

NAS620C6

ID 0.143
OD 0.267
Thickness 0.032
Drawing REV 8
Quantity

NAS620C6L

ID 0.143
OD 0.267
Thickness 0.016
Drawing REV 8
Quantity

NAS620C6LP

ID 0.143
OD 0.267
Thickness 0.016
Drawing REV 8
Quantity

NAS620C6P

ID 0.143
OD 0.267
Thickness 0.032
Drawing REV 8
Quantity

NAS620C8

ID 0.169
OD 0.304
Thickness 0.032
Drawing REV 8
Quantity

NAS620C8L

ID 0.169
OD 0.304
Thickness 0.016
Drawing REV 8
Quantity

NAS620C8LP

ID 0.169
OD 0.304
Thickness 0.016
Drawing REV 8
Quantity

NAS620C8P

ID 0.169
OD 0.304
Thickness 0.032
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.