PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

945-4Washer,flat

Department of the Air Force · NSN 5310-00-187-2341 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-187-2341 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-187-2341. Primary manufacturer part number: 945-4.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OR IRON OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Thickness: 0.062 INCHES NOMINAL IN
  • Hole Diameter: 0.250 INCHES NOMINAL IN
  • Heat Treatment: AS FABRICATED
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel or Iron Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-187-2341, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Department of the Air Force. 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-187-2341
Primary Part Number945-4
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDepartment of the Air Force
StatusCANCELLED
MaterialSTEEL OR IRON OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Thickness0.062 INCHES NOMINAL IN
Hole Diameter0.250 INCHES NOMINAL IN
Heat TreatmentAS FABRICATED
Peripheral Shape StyleROUND
Overall Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
3030-00-076-9107158181H INTERCHANGEABLE
Belt,v
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
6220-00-944-2966650W INTERCHANGEABLE
Lamp Unit,vehicular
Truck-Lite Co., Llc
4310-01-143-54959861-1 INTERCHANGEABLE
Head Assembly,cylinder
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
2920-01-167-91434240435 INTERCHANGEABLE
Lead Set,ignition,engine
Chrysler Corp Service and Parts Opns
5995-01-207-17639454 INTERCHANGEABLE
Cable Assembly,telephone
Hose-Mccann Telephone Co, Inc
5970-01-275-96449454 INTERCHANGEABLE
Insulator,plate
Carlisle & Finch Co
5340-01-479-731991015-1 INTERCHANGEABLE
Catch,flush
Avibank Mfg., Inc. Dba Avibank Manufacturing Inc
Cross-Reference Index
Part NumberManufacturer
945-4 Department of the Air Force (USA)
Related Parts
3030-00-076-9107INTERCHANGEABLE
BELT,V
158181H
6220-00-944-2966INTERCHANGEABLE
LAMP UNIT,VEHICULAR
650W
4310-01-143-5495INTERCHANGEABLE
HEAD ASSEMBLY,CYLINDER
9861-1
2920-01-167-9143INTERCHANGEABLE
LEAD SET,IGNITION,ENGINE
4240435
5995-01-207-1763INTERCHANGEABLE
CABLE ASSEMBLY,TELEPHONE
9454
5970-01-275-9644INTERCHANGEABLE
INSULATOR,PLATE
9454
5340-01-479-7319INTERCHANGEABLE
CATCH,FLUSH
91015-1

Frequently Asked Questions

What is NSN 5310-00-187-2341?

NSN 5310-00-187-2341 is a Washer,flat, manufactured by Department of the Air Force, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-187-2341?

NSN 5310-00-187-2341 has 1 cross-referenced part number: 945-4 (Department of the Air Force).

What NSN replaces 5310-00-187-2341?

There are 7 known substitutes for 5310-00-187-2341: 3030-00-076-9107, 6220-00-944-2966, 4310-01-143-5495 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 945-4?

Key specifications for 945-4: Material: STEEL OR IRON OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Center Hole Shape Style: ROUND; Thickness: 0.062 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-187-2341 still in active supply?

NSN 5310-00-187-2341 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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