PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25621Washer,flat

Triumph Engine Control Systems Llc · NSN 5310-01-032-3524 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-032-3524 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-032-3524. Primary manufacturer part number: 25621.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: MIL-S-5059,COND HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Material: STEEL COMP 301 OVERALL
  • Thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-032-3524, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-032-3524
Primary Part Number25621
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Material Document and ClassificationMIL-S-5059,COND HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
MaterialSTEEL COMP 301 OVERALL
Thickness0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Overall Diameter0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2920-00-229-55469-29210 INTERCHANGEABLE
Rotor,ignition Distributor
Thermo Power Corp Engine Div
5999-00-238-1213A23-1131 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
5133-00-266-946811/16 2510/950 INTERCHANGEABLE
Drill,twist
Greenfield Industries Inc
3110-01-012-747125621 INTERCHANGEABLE
Plate,retaining,bearing
Williams International Co., L.l.c.
5325-01-257-672025621 INTERCHANGEABLE
Ring,retaining
Bowmar Llc Dba Bowmar Instrument Corp
5133-01-443-307725621 INTERCHANGEABLE
Drill,twist
Time Fastener Co Inc
6635-01-585-47212562-1 INTERCHANGEABLE
Reference Standard,physical Prop
Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division
Cross-Reference Index
Part NumberManufacturer
25621 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
2920-00-229-5546INTERCHANGEABLE
ROTOR,IGNITION DISTRIBUTOR
9-29210
5999-00-238-1213INTERCHANGEABLE
CONTACT,ELECTRICAL
A23-1131
5133-00-266-9468INTERCHANGEABLE
DRILL,TWIST
11/16 2510/950
3110-01-012-7471INTERCHANGEABLE
PLATE,RETAINING,BEARING
25621
5325-01-257-6720INTERCHANGEABLE
RING,RETAINING
25621
5133-01-443-3077INTERCHANGEABLE
DRILL,TWIST
25621
6635-01-585-4721INTERCHANGEABLE
REFERENCE STANDARD,PHYSICAL PROP
2562-1

Frequently Asked Questions

What is NSN 5310-01-032-3524?

NSN 5310-01-032-3524 is a Washer,flat, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-032-3524?

NSN 5310-01-032-3524 has 1 cross-referenced part number: 25621 (Triumph Engine Control Systems Llc).

What NSN replaces 5310-01-032-3524?

There are 7 known substitutes for 5310-01-032-3524: 2920-00-229-5546, 5999-00-238-1213, 5133-00-266-9468 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25621?

Key specifications for 25621: Material Document and Classification: MIL-S-5059,COND HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Peripheral Shape Style: ROUND; Material: STEEL COMP 301 OVERALL; Thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN. 8 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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