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Technical Data Sheet
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D3139020 — HOLDER,SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D3139020: HOLDER,SPRING.

The HOLDER,SPRING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-00-346-8957, 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
D3139020
NSN: 5340-00-346-8957
FSC: 5340 — Hardware, Commercial
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part NumberD3139020
NSN5340-00-346-8957
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D3139020 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 1
BS1053Reference 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 D3139020?
D3139020 is a HOLDER,SPRING.
What parts can replace D3139020?
There is 1 known substitute for D3139020: BS1053. Substitute compatibility should be verified for your specific system.
What is the NSN for D3139020?
D3139020 is cataloged in the U.S. Government catalog under NSN 5340-00-346-8957. This indicates validated use in U.S. government and defense supply chains.
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