PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS620-3LWasher,flat

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-576-0900 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-576-0900 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-576-0900. Primary manufacturer part number: NAS620-3L.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL OVERALL
  • Overall Diameter: 0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OVERALL
  • Center Hole Shape Style: ROUND
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-576-0900, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-576-0900
Primary Part NumberNAS620-3L
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
StatusCANCELLED
Peripheral Shape StyleROUND
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Overall Diameter0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Center Hole Shape StyleROUND
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.016 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4320-00-132-4648 INTERCHANGEABLE
Ring,wearing
3040-00-356-3500SC-C-70650 INTERCHANGEABLE
Detent Plate
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
1680-00-511-544951558 INTERCHANGEABLE
Adapter,flexible Sh
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
4140-01-115-5976 INTERCHANGEABLE
Impeller,fan,axial
5998-01-135-1530 INTERCHANGEABLE
Printed Wiring Board
4240-01-251-3283 INTERCHANGEABLE
Valve,exhalation,respirator
8345-01-590-1729 INTERCHANGEABLE
Flag,us Army Meddac
Cross-Reference Index
Part NumberManufacturer
515-58 Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA)
8BASMALL Thales Uk Limited Dba Thales Uk Ltd Avionics (GBR)
NAS620-3L PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS620L3 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
5953070 Tadiran Ltd (ISR)
310-0740-090 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
5310PL0150241 Jednolity Indeks Materialowy - Uniform Material Index (POL)
418154-3 Raytheon Company Dba Raytheon (USA)
Related Parts
4320-00-132-4648INTERCHANGEABLE
RING,WEARING
3040-00-356-3500INTERCHANGEABLE
DETENT PLATE
SC-C-70650
1680-00-511-5449INTERCHANGEABLE
ADAPTER,FLEXIBLE SH
51558
4140-01-115-5976INTERCHANGEABLE
IMPELLER,FAN,AXIAL
5998-01-135-1530INTERCHANGEABLE
PRINTED WIRING BOARD
4240-01-251-3283INTERCHANGEABLE
VALVE,EXHALATION,RESPIRATOR
8345-01-590-1729INTERCHANGEABLE
FLAG,US ARMY MEDDAC

Frequently Asked Questions

What is NSN 5310-00-576-0900?

NSN 5310-00-576-0900 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: cancelled.

What are the part numbers for NSN 5310-00-576-0900?

NSN 5310-00-576-0900 has 8 cross-referenced part numbers: 515-58 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems), 8BASMALL (Thales Uk Limited Dba Thales Uk Ltd Avionics), NAS620-3L (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS620L3 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 5953070 (Tadiran Ltd) and 3 more.

What NSN replaces 5310-00-576-0900?

There are 7 known substitutes for 5310-00-576-0900: 4320-00-132-4648, 3040-00-356-3500, 1680-00-511-5449 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS620-3L?

Key specifications for NAS620-3L: Peripheral Shape Style: ROUND; Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL OVERALL; Overall Diameter: 0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-576-0900 still in active supply?

NSN 5310-00-576-0900 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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