PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11594593-2Washer,flat

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5310-00-521-4890 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-521-4890 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-521-4890. Primary manufacturer part number: 11594593-2.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 2.250 INCHES NOMINAL IN
  • Material: STEEL COMP 1015 OVERALL
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 0.656 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.125 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1015 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-521-4890, 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 8 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-521-4890
Primary Part Number11594593-2
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Overall Diameter2.250 INCHES NOMINAL IN
MaterialSTEEL COMP 1015 OVERALL
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter0.656 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.125 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6220-00-397-6823ST5M1223-001 INTERCHANGEABLE
Light,landing,aircraft
The Boeing Company Div Defense
5940-00-553-2108 INTERCHANGEABLE
Terminal,lug
2920-00-566-73791971244 INTERCHANGEABLE
Cap,ignition Distribution
Borgwarner Pds (anderson), L.l.c.
5365-00-570-344114-460 INTERCHANGEABLE
Spacer,turbine
Buffalo Turbine Defense Llc
6145-01-126-37596010602-001 INTERCHANGEABLE
Cable,special Purpose,electrical
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
5950-01-303-0726312A3232P1 INTERCHANGEABLE
Transformer,current
Bae Systems Controls Inc.
5945-01-373-976214460 INTERCHANGEABLE
Relay,electromagnetic
Blako Inc. Dba Blakeslee
Cross-Reference Index
Part NumberManufacturer
14460 Diamond Reo Truck Co (USA)
S1951 Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
11594593-2 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
FFW92A Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A28829X White Motor Corp (USA)
Related Parts
6220-00-397-6823INTERCHANGEABLE
LIGHT,LANDING,AIRCRAFT
ST5M1223-001
5940-00-553-2108INTERCHANGEABLE
TERMINAL,LUG
2920-00-566-7379INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
1971244
5365-00-570-3441INTERCHANGEABLE
SPACER,TURBINE
14-460
6145-01-126-3759INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
6010602-001
5950-01-303-0726INTERCHANGEABLE
TRANSFORMER,CURRENT
312A3232P1
5945-01-373-9762INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
14460

Frequently Asked Questions

What is NSN 5310-00-521-4890?

NSN 5310-00-521-4890 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-521-4890?

NSN 5310-00-521-4890 has 5 cross-referenced part numbers: 14460 (Diamond Reo Truck Co), S1951 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), 11594593-2 (U S Army Tank Automotive Command Amsta-Im-Mm), FFW92A (Federal Specifications Promulgated by General Services Administration Washington DC), A28829X (White Motor Corp).

What NSN replaces 5310-00-521-4890?

There are 7 known substitutes for 5310-00-521-4890: 6220-00-397-6823, 5940-00-553-2108, 2920-00-566-7379 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11594593-2?

Key specifications for 11594593-2: Overall Diameter: 2.250 INCHES NOMINAL IN; Material: STEEL COMP 1015 OVERALL; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Hole Diameter: 0.656 INCHES NOMINAL 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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