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KC139C8 — NUT,SWIVEL FLARED TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

KC139C8: NUT,SWIVEL FLARED TUBE FITTING.

The NUT,SWIVEL FLARED TUBE FITTING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-01-353-9952, 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
KC139C8
NSN: 4730-01-353-9952
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 22264 — JOHN F KENNEDY SPACE CENTER DBA NASA DIV KENNEDY SPACE CENTER (USA)
SPECIFICATIONS
general_characteristics_item_descriptionKC139K8; CORROSION RESISTANT STEEL,TYPE 316; TUBE OUTSIDE DIAMETER 1/2 IN.; THREAD DATA: .7500-16 UNJF-3B; HEX INCHES .875 IN
NSN4730-01-353-9952
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: KC139C8 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: KC139K8; CORROSION RESISTANT STEEL,TYPE 316; TUBE OUTSIDE DIAMETER 1/2 IN.; THREAD DATA: .7500-16 UNJF-3B; HEX INCHES .875 IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONKC139K8; CORROSION RESISTANT STEEL,TYPE 316; TUBE OUTSIDE DIAMETER 1/2 IN.; THREAD DATA: .7500-16 UNJF-3B; HEX INCHES .875 IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
AS4323K08Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
KC139K8Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is KC139C8?
KC139C8 is a NUT,SWIVEL FLARED TUBE FITTING.
What parts can replace KC139C8?
There are 2 known substitutes for KC139C8: AS4323K08, KC139K8. Substitute compatibility should be verified for your specific system.
What is the NSN for KC139C8?
KC139C8 is cataloged in the U.S. Government catalog under NSN 4730-01-353-9952. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.