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1877903-801 — REDUCER,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1877903-801: REDUCER,PIPE.

The REDUCER,PIPE is a the manufacturer industrial component. Key specifications include wall_thickness: 4.5 MILLIMETERS NOMINAL MM, inside_diameter: 22.0 MILLIMETERS NOMINAL MM, special_features: OIL TANK MOUNTING, thread_direction: RIGHT-HAND HEAD INTERNAL, end_item_identification: OIL TANK ASSY. STRATEGIC SEALIFT CONVERSION SHIPS CLASS., nominal_pipe_size_for_which_designed: 1.250 INCHES IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-432-9909, 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
1877903-801
NSN: 4730-01-432-9909
NIINs: 014329909, 014332604, 014337145
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: S8829 — CARGOTEC SWEDEN AB - MACGREGOR CRANES (SWE)
SPECIFICATIONS
wall_thickness4.5 MILLIMETERS NOMINAL MM
inside_diameter22.0 MILLIMETERS NOMINAL MM
special_featuresOIL TANK MOUNTING
thread_directionRIGHT-HAND HEAD INTERNAL
end_item_identificationOIL TANK ASSY. STRATEGIC SEALIFT CONVERSION SHIPS CLASS.
nominal_pipe_size_for_which_designed1.250 INCHES IN
NSN4730-01-432-9909
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1877903-801 · 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
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 1.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND HEAD INTERNAL
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE FOR WHICH DESIGNED1.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND HEAD INTERNAL
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS.
SUBSTITUTES & CROSS-REFERENCES 2
25222111-117Reference document
Same NSN cross-reference
Reference document — Secondary reference
1877903-801 ITEM 013Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1877903-801?
1877903-801 is a REDUCER,PIPE.
What parts can replace 1877903-801?
There are 2 known substitutes for 1877903-801: 25222111-117, 1877903-801 ITEM 013. Substitute compatibility should be verified for your specific system.
What is the NSN for 1877903-801?
1877903-801 is cataloged in the U.S. Government catalog under NSN 4730-01-432-9909. 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.