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8B-7557 — REDUCER,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

8B-7557: REDUCER,PIPE.

The REDUCER,PIPE is a the manufacturer industrial component. Key specifications include connection_type: THREADED EXTERNAL PIPE 2ND END, connection_style: PLAIN (PIPE) ALL ENDS, end_item_identification: NSN: 1905-01-154-1191, thread_quantity_per_inch: 16 2ND END, nondefinitive_spec/std_data: 3.1TONS CAPACITY, nominal_pipe_size_accommodated: 0.375 INCHES 2ND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-731-0800, 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
8B-7557
NSN: 4730-01-731-0800
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
connection_typeTHREADED EXTERNAL PIPE 2ND END
connection_stylePLAIN (PIPE) ALL ENDS
end_item_identificationNSN: 1905-01-154-1191
thread_quantity_per_inch16 2ND END
nondefinitive_spec/std_data3.1TONS CAPACITY
nominal_pipe_size_accommodated0.375 INCHES 2ND END IN
part_name_assigned_by_controlling_agencyTHREADED ADAPTER
NSN4730-01-731-0800
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 8B-7557 · 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 ACCOMMODATED: 0.375 INCHES 2ND END IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE 2ND END
•
NONDEFINITIVE SPEC/STD DATA: 3.1TONS CAPACITY
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES 2ND END IN
NOMINAL PIPE SIZE ACCOMMODATED0.625 INCHES 1ST END IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE 2ND END
CONNECTION TYPETHREADED INTERNAL PIPE 1ST END
NONDEFINITIVE SPEC/STD DATA3.1TONS CAPACITY
PART NAME ASSIGNED BY CONTROLLING AGENCYTHREADED ADAPTER
END ITEM IDENTIFICATIONNSN: 1905-01-154-1191
THREAD QUANTITY PER INCH16 2ND END
THREAD QUANTITY PER INCH18 1ST END
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

No substitute or cross-reference records for this part.

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 8B-7557?
8B-7557 is a REDUCER,PIPE.
What is the NSN for 8B-7557?
8B-7557 is cataloged in the U.S. Government catalog under NSN 4730-01-731-0800. This indicates validated use in U.S. government and defense supply chains.
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