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HS 4877 — REDUCER,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

HS 4877: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, seat_angle: 24.0 DEGREES SECOND END, reducer_type: CONCENTRIC, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: FLARELESS (TUBE) SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-202-6760, 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
HS 4877
NSN: 4730-01-202-6760
NIINs: 012026760, 012771400
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 02731 — MCDONNELL DOUGLAS HELICOPTER CO INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
seat_angle24.0 DEGREES SECOND END
reducer_typeCONCENTRIC
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) SECOND END
surface_treatmentANODIZE OVERALL
nominal_thread_size0.750 INCHES FIRST END IN
nominal_overall_length1.539 INCHES IN
media_for_which_designedAERONAUTICAL FLUID SINGLE RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) SECOND END
furnished_items_and_quantity1 SWIVEL NUT
NSN4730-01-202-6760
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: HS 4877 · 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 1
HS4877-D0804Reference document
Same NSN cross-reference
Reference document — Secondary 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 HS 4877?
HS 4877 is a REDUCER,TUBE.
What parts can replace HS 4877?
There is 1 known substitute for HS 4877: HS4877-D0804. Substitute compatibility should be verified for your specific system.
What is the NSN for HS 4877?
HS 4877 is cataloged in the U.S. Government catalog under NSN 4730-01-202-6760. 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.