PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4B4274Washer,flat

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-268-2447 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-268-2447 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-268-2447. Primary manufacturer part number: 4B4274.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Thickness: 0.062 INCHES NOMINAL IN
  • Hole Diameter: 0.219 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.500 INCHES NOMINAL IN
  • Material: STEEL OVERALL
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 5310-00-268-2447, 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 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-268-2447
Primary Part Number4B4274
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Thickness0.062 INCHES NOMINAL IN
Hole Diameter0.219 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Overall Diameter0.500 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-809-8546 INTERCHANGEABLE
Washer,flat
5310-01-692-49784B-4274 INTERCHANGEABLE
Washer,flat
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
4B4274 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
4B-4274 Navantia - Propulsion Y Energia Motores - Cartagena (ESP)
4B-4274 Navantia Sa Sme. Div Navantia Hq (ESP)
Related Parts
5310-00-809-8546INTERCHANGEABLE
WASHER,FLAT
5310-01-692-4978INTERCHANGEABLE
WASHER,FLAT
4B-4274

Frequently Asked Questions

What is NSN 5310-00-268-2447?

NSN 5310-00-268-2447 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 5310-00-268-2447?

NSN 5310-00-268-2447 has 3 cross-referenced part numbers: 4B4274 (Caterpillar Inc Div Caterpillar Defense), 4B-4274 (Navantia - Propulsion Y Energia Motores - Cartagena), 4B-4274 (Navantia Sa Sme. Div Navantia Hq).

What NSN replaces 5310-00-268-2447?

There are 2 known substitutes for 5310-00-268-2447: 5310-00-809-8546, 5310-01-692-4978. Verify interchangeability with system specifications before substitution.

What are the specifications of 4B4274?

Key specifications for 4B4274: Cross-Sectional Shape Style: RECTANGULAR; Center Hole Shape Style: ROUND; Thickness: 0.062 INCHES NOMINAL IN; Hole Diameter: 0.219 INCHES NOMINAL IN. 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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