PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40230Washer,flat

Fastenal Company Dba Fastenal Co · NSN 5310-01-620-8875 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-620-8875 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-620-8875. Primary manufacturer part number: 40230.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 25.00 MILLIMETERS NOMINAL MM
  • Thickness: 4.3 MILLIMETERS NOMINAL MM
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 44.00 MILLIMETERS NOMINAL MM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-620-8875, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-620-8875
Primary Part Number40230
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
MaterialSTEEL OVERALL
Center Hole Shape StyleROUND
Hole Diameter25.00 MILLIMETERS NOMINAL MM
Thickness4.3 MILLIMETERS NOMINAL MM
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Overall Diameter44.00 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3455-00-230-703758-10092 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5360-00-469-292940230 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
5342-01-169-855640230 INTERCHANGEABLE
Latch,safety,hook
Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division
5962-01-225-675740230 INTERCHANGEABLE
Microcircuit,memory
Raytheon Company Div Rmd Strategic
5965-01-250-8542 INTERCHANGEABLE
Loudspeaker Assembly
5930-01-310-0882 INTERCHANGEABLE
Switch,thermostatic
5120-01-373-4981 INTERCHANGEABLE
Pliers,retaining Ring
2910-01-507-366940230 INTERCHANGEABLE
Pump,fuel,electrical
Arvinmeritor Inc
3010-01-632-552740230 INTERCHANGEABLE
Nrp,actuator,lso Co
Exlar Corporation
3120-01-633-483241067 INTERCHANGEABLE
Bushing,sleeve
Exlar Corporation
Cross-Reference Index
Part NumberManufacturer
40230 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
3455-00-230-7037INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10092
5360-00-469-2929INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
40230
5342-01-169-8556INTERCHANGEABLE
LATCH,SAFETY,HOOK
40230
5962-01-225-6757INTERCHANGEABLE
MICROCIRCUIT,MEMORY
40230
5965-01-250-8542INTERCHANGEABLE
LOUDSPEAKER ASSEMBLY
5930-01-310-0882INTERCHANGEABLE
SWITCH,THERMOSTATIC
5120-01-373-4981INTERCHANGEABLE
PLIERS,RETAINING RING
2910-01-507-3669INTERCHANGEABLE
PUMP,FUEL,ELECTRICAL
40230
3010-01-632-5527INTERCHANGEABLE
NRP,ACTUATOR,LSO CO
40230
3120-01-633-4832INTERCHANGEABLE
BUSHING,SLEEVE
41067
3020-01-633-5046INTERCHANGEABLE
GEAR,SPUR
41400
3110-01-633-6308INTERCHANGEABLE
BEARING,BALL,ANNULAR
41449

Frequently Asked Questions

What is NSN 5310-01-620-8875?

NSN 5310-01-620-8875 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-620-8875?

NSN 5310-01-620-8875 has 1 cross-referenced part number: 40230 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-620-8875?

There are 12 known substitutes for 5310-01-620-8875: 3455-00-230-7037, 5360-00-469-2929, 5342-01-169-8556 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40230?

Key specifications for 40230: Material: STEEL OVERALL; Center Hole Shape Style: ROUND; Hole Diameter: 25.00 MILLIMETERS NOMINAL MM; Thickness: 4.3 MILLIMETERS NOMINAL MM. 7 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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