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AM4C — REDUCER,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AM4C: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 BODY, connection_type: THREADED EXTERNAL TUBE SECOND END, nominal_thread_size: 0.4375 INCHES FIRST END IN, nominal_overall_length: 1.54 INCHES IN, thread_quantity_per_inch: 20 FIRST END, nominal_width_across_flats: 0.50 INCHES CENTER BULKHEAD IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-698-9170, 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
AM4C
NSN: 4730-01-698-9170
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79926 — SSP FITTINGS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 316 BODY
connection_typeTHREADED EXTERNAL TUBE SECOND END
nominal_thread_size0.4375 INCHES FIRST END IN
nominal_overall_length1.54 INCHES IN
thread_quantity_per_inch20 FIRST END
nominal_width_across_flats0.50 INCHES CENTER BULKHEAD IN
nominal_outside_diameter_tube_accommodated0.25 INCHES FIRST END IN
NSN4730-01-698-9170
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AM4C · 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 WIDTH ACROSS FLATS: 0.50 INCHES CENTER BULKHEAD IN
•
NOMINAL OVERALL LENGTH: 1.54 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.25 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.4375 INCHES FIRST END IN
•
THREAD QUANTITY PER INCH: 20 FIRST END
TECHNICAL CHARACTERISTICS
NOMINAL WIDTH ACROSS FLATS0.50 INCHES CENTER BULKHEAD IN
NOMINAL OVERALL LENGTH1.54 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.25 INCHES FIRST END IN
NOMINAL THREAD SIZE0.4375 INCHES FIRST END IN
NOMINAL THREAD SIZE0.1250 INCHES SECOND END IN
THREAD QUANTITY PER INCH20 FIRST END
THREAD QUANTITY PER INCH27 SECOND END
MATERIALSTEEL COMP 316 BODY
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AM4C?
AM4C is a REDUCER,TUBE.
What is the NSN for AM4C?
AM4C is cataloged in the U.S. Government catalog under NSN 4730-01-698-9170. 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.