PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS620C6PWasher,flat

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-890-3423 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-890-3423 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-890-3423. Primary manufacturer part number: NAS620C6P.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Color: BLACK OVERALL
  • Material Document and Classification: QQ-S-766 COND A FINISH 2D OR 2B FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 301 OR STEEL COMP 348 OVERALL
  • Surface Treatment: OXIDE FILM OVERALL
  • Surface Treatment Document and Classification: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Overall Diameter: 0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 or Steel Comp 348 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-890-3423, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-890-3423
Primary Part NumberNAS620C6P
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
ColorBLACK OVERALL
Material Document and ClassificationQQ-S-766 COND A FINISH 2D OR 2B FED SPEC ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 301 OR STEEL COMP 348 OVERALL
Surface TreatmentOXIDE FILM OVERALL
Surface Treatment Document and ClassificationMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Overall Diameter0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN
Thickness0.032 INCHES NOMINAL IN
Hole Diameter0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-773-7624NAS620C6 INTERCHANGEABLE
Washer,flat
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
10340276 Nimikkeistokeskus Ncb Finland (FIN)
950833-29 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
NAS620C6P PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
WC1057-29 Allmetal Screw Products Corp (USA)
5310PL1672926 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5310-00-773-7624INTERCHANGEABLE
WASHER,FLAT
NAS620C6

Frequently Asked Questions

What is NSN 5310-00-890-3423?

NSN 5310-00-890-3423 is a Washer,flat, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-890-3423?

NSN 5310-00-890-3423 has 5 cross-referenced part numbers: 10340276 (Nimikkeistokeskus Ncb Finland), 950833-29 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), NAS620C6P (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), WC1057-29 (Allmetal Screw Products Corp), 5310PL1672926 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 5310-00-890-3423?

There is 1 known substitute for 5310-00-890-3423: 5310-00-773-7624. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS620C6P?

Key specifications for NAS620C6P: Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; Material Document and Classification: QQ-S-766 COND A FINISH 2D OR 2B FED SPEC ALL MATERIAL RESPONSES OVERALL; Material: STEEL COMP 301 OR STEEL COMP 348 OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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