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Technical Data Sheet
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CADH4639A — HOLDER,SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CADH4639A: HOLDER,SPRING.

The HOLDER,SPRING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-218-7040, 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
CADH4639A
NSN: 5340-01-218-7040
FSC: 5340 — Hardware, Commercial
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
Part NumberCADH4639A
NSN5340-01-218-7040
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CADH4639A 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 2
ADH4639AReference document
Same NSN cross-reference
Reference document — Secondary reference
D3135838 PIECE 7Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CADH4639A?
CADH4639A is a HOLDER,SPRING.
What parts can replace CADH4639A?
There are 2 known substitutes for CADH4639A: ADH4639A, D3135838 PIECE 7. Substitute compatibility should be verified for your specific system.
What is the NSN for CADH4639A?
CADH4639A is cataloged in the U.S. Government catalog under NSN 5340-01-218-7040. This indicates validated use in U.S. government and defense supply chains.
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