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502178 — HOUSING,GEARBOX,TURBINE ENGINE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

502178: HOUSING,GEARBOX,TURBINE ENGINE.

The HOUSING,GEARBOX,TURBINE ENGINE is a the manufacturer industrial component. Key specifications include length: 1.055 INCHES NOMINAL IN, diameter: 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, cross-sectional_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-011-2578, 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
502178
NSN: 4730-00-011-2578
NIINs: 000112578, 009113276, 010919362, 013553094
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
length1.055 INCHES NOMINAL IN
diameter0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
cross-sectional_shapeROUND
NSN4730-00-011-2578
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 502178 · 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
SUBSTITUTES & CROSS-REFERENCES 9
1945HX1Reference document
Same NSN cross-reference
Reference document — Secondary reference
109B1-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
A908196Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
109-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
9908-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
W65048Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 502178?
502178 is a HOUSING,GEARBOX,TURBINE ENGINE.
What parts can replace 502178?
There are 9 known substitutes for 502178: 1945HX1, 109B1-4, A908196 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 502178?
502178 is cataloged in the U.S. Government catalog under NSN 4730-00-011-2578. 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.