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Technical Data Sheet
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4B479 — PLUNGER,DETENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4B479: PLUNGER,DETENT.

The PLUNGER,DETENT is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-00-127-0901, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4B479
NSN: 5340-00-127-0901
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
Part Number4B479
NSN5340-00-127-0901
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4B479 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 3
23673Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
IPD4B0479Reference document
Same NSN cross-reference
Reference document — Secondary reference
IPD4B479Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4B479?
4B479 is a PLUNGER,DETENT.
What parts can replace 4B479?
There are 3 known substitutes for 4B479: 23673, IPD4B0479, IPD4B479. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B479?
4B479 is cataloged in the U.S. Government catalog under NSN 5340-00-127-0901. This indicates validated use in U.S. government and defense supply chains.
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