PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5B426Washer,flat

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-423-9593 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-423-9593 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-423-9593. Primary manufacturer part number: 5B426.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.688 INCHES NOMINAL IN
  • Thickness: 0.156 INCHES NOMINAL IN
  • Hole Diameter: 0.500 INCHES NOMINAL IN
  • Material: CORK OVERALL
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Cork Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-423-9593, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-423-9593
Primary Part Number5B426
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Overall Diameter0.688 INCHES NOMINAL IN
Thickness0.156 INCHES NOMINAL IN
Hole Diameter0.500 INCHES NOMINAL IN
MaterialCORK OVERALL
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3455-00-059-557607880 INTERCHANGEABLE
Cutter,milling,metal Slitting
Niagara Cutter Inc
5340-00-579-5669MST206 INTERCHANGEABLE
Cap,protective,dust and Moisture
Bunzl Plastic Inc Dba Alliance Plastics
5210-01-140-0188M206-RB INTERCHANGEABLE
Gage,thickness Transducer
Panametrics Llc
4720-01-432-9961390PBA INTERCHANGEABLE
Fuel Line Assembly,diving
Tempo Products Co
Cross-Reference Index
Part NumberManufacturer
M2-06 Almetal Universal Joint Co (USA)
5B0426 Caterpillar Inc Div Caterpillar Defense (USA)
5B426 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
3455-00-059-5576INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
07880
5340-00-579-5669INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
MST206
5210-01-140-0188INTERCHANGEABLE
GAGE,THICKNESS TRANSDUCER
M206-RB
4720-01-432-9961INTERCHANGEABLE
FUEL LINE ASSEMBLY,DIVING
390PBA

Frequently Asked Questions

What is NSN 5310-00-423-9593?

NSN 5310-00-423-9593 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-423-9593?

NSN 5310-00-423-9593 has 3 cross-referenced part numbers: M2-06 (Almetal Universal Joint Co), 5B0426 (Caterpillar Inc Div Caterpillar Defense), 5B426 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5310-00-423-9593?

There are 4 known substitutes for 5310-00-423-9593: 3455-00-059-5576, 5340-00-579-5669, 5210-01-140-0188 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5B426?

Key specifications for 5B426: Overall Diameter: 0.688 INCHES NOMINAL IN; Thickness: 0.156 INCHES NOMINAL IN; Hole Diameter: 0.500 INCHES NOMINAL IN; Material: CORK OVERALL. 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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