PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54659Washer,flat

Honeywell International, Inc Div Aerospace-Tucson · NSN 5310-00-595-5942 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-595-5942 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-595-5942. Primary manufacturer part number: 54659.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Thickness: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
  • Material: STEEL COMP 1009 OVERALL
  • Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-700 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Overall Diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Surface Treatment Document and Classification: QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1009 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-595-5942, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-595-5942
Primary Part Number54659
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell International, Inc Div Aerospace-Tucson
StatusCANCELLED
Peripheral Shape StyleROUND
Thickness0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
MaterialSTEEL COMP 1009 OVERALL
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-700 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Overall Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Surface Treatment Document and ClassificationQQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.116 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
8340-00-121-1327 INTERCHANGEABLE
Frame,tent
5330-00-291-66589B1545 INTERCHANGEABLE
Gasket
Caterpillar Inc Div Caterpillar Defense
5340-01-535-559254659 INTERCHANGEABLE
Bracket,mounting
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5310-01-553-742854659 INTERCHANGEABLE
Nut Blank
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
422699 Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis (USA)
54659 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
54659 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
54659 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
Related Parts
8340-00-121-1327INTERCHANGEABLE
FRAME,TENT
5330-00-291-6658INTERCHANGEABLE
GASKET
9B1545
5340-01-535-5592INTERCHANGEABLE
BRACKET,MOUNTING
54659
5310-01-553-7428INTERCHANGEABLE
NUT BLANK
54659

Frequently Asked Questions

What is NSN 5310-00-595-5942?

NSN 5310-00-595-5942 is a Washer,flat, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-595-5942?

NSN 5310-00-595-5942 has 4 cross-referenced part numbers: 422699 (Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis), 54659 (Honeywell International, Inc Div Aerospace-Tucson), 54659 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 54659 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems).

What NSN replaces 5310-00-595-5942?

There are 4 known substitutes for 5310-00-595-5942: 8340-00-121-1327, 5330-00-291-6658, 5340-01-535-5592 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 54659?

Key specifications for 54659: Peripheral Shape Style: ROUND; Thickness: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN; Material: STEEL COMP 1009 OVERALL; Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-700 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-595-5942 still in active supply?

NSN 5310-00-595-5942 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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