PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7409321Washer,flat

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5310-00-404-8189 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-404-8189 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-404-8189. Primary manufacturer part number: 7409321.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Thickness: 0.225 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
  • Surface Treatment: COPPER OVERALL
  • Material: STEEL COMP 1213 OVERALL
  • Material Document and Classification: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Overall Diameter: 1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: MIL-C-14550 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1213 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-404-8189, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-404-8189
Primary Part Number7409321
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
Center Hole Shape StyleROUND
Thickness0.225 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Surface TreatmentCOPPER OVERALL
MaterialSTEEL COMP 1213 OVERALL
Material Document and ClassificationAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
Overall Diameter1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationMIL-C-14550 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Hole Diameter0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
3020-01-508-6138167-7409321-10 INTERCHANGEABLE
Gear Sector,spur
Naval Sea Systems Command
3010-01-508-6259167-7409321-8 INTERCHANGEABLE
Coupling,shaft,rigid
Naval Sea Systems Command
3040-01-509-1434167-7409321-7 INTERCHANGEABLE
Shaft,shouldered
Naval Sea Systems Command
3020-01-509-1454167-7409321-11 INTERCHANGEABLE
Gear,spur
Naval Sea Systems Command
3120-01-509-2194KJB897472V-MC INTERCHANGEABLE
Bearing,sleeve
Kamatics Corporation
3040-01-509-2801167-7409321-3 INTERCHANGEABLE
Shaft Assembly,straight
Naval Sea Systems Command
5340-01-509-3628B541-1110-38 INTERCHANGEABLE
Clip,spring Tension
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-509-4928B541-1110-28 INTERCHANGEABLE
Pad,cushioning
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-509-4934B541-1110-2 INTERCHANGEABLE
Clevis,rod End
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
FC7739 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
7409321 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
111468H Komatsu American Intl Co (USA)
5310004048189 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
5310004048189 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
F7739 PRIMARY Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
111468H Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
FC7739B Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
Related Parts
3020-01-508-6138INTERCHANGEABLE
GEAR SECTOR,SPUR
167-7409321-10
3010-01-508-6259INTERCHANGEABLE
COUPLING,SHAFT,RIGID
167-7409321-8
3040-01-509-1434INTERCHANGEABLE
SHAFT,SHOULDERED
167-7409321-7
3020-01-509-1454INTERCHANGEABLE
GEAR,SPUR
167-7409321-11
3120-01-509-2194INTERCHANGEABLE
BEARING,SLEEVE
KJB897472V-MC
3040-01-509-2801INTERCHANGEABLE
SHAFT ASSEMBLY,STRAIGHT
167-7409321-3
5340-01-509-3628INTERCHANGEABLE
CLIP,SPRING TENSION
B541-1110-38
5340-01-509-4928INTERCHANGEABLE
PAD,CUSHIONING
B541-1110-28
5340-01-509-4934INTERCHANGEABLE
CLEVIS,ROD END
B541-1110-2

Frequently Asked Questions

What is NSN 5310-00-404-8189?

NSN 5310-00-404-8189 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-404-8189?

NSN 5310-00-404-8189 has 8 cross-referenced part numbers: FC7739 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), 7409321 (U S Army Tank Automotive Command Amsta-Im-Mm), 111468H (Komatsu American Intl Co), 5310004048189 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), 5310004048189 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales) and 3 more.

What NSN replaces 5310-00-404-8189?

There are 9 known substitutes for 5310-00-404-8189: 3020-01-508-6138, 3010-01-508-6259, 3040-01-509-1434 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7409321?

Key specifications for 7409321: Center Hole Shape Style: ROUND; Thickness: 0.225 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Surface Treatment: COPPER OVERALL; Material: STEEL COMP 1213 OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-404-8189 still in active supply?

NSN 5310-00-404-8189 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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