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149871 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: STEEL, bore_type: ROUGH, overall_length: 4.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-203-9222, 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
149871
NSN: 4730-00-203-9222
FSC: 4730
CAGE: 82577 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL
bore_typeROUGH
overall_length4.750 INCHES NOMINAL IN
NSN4730-00-203-9222
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 149871 · 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 THREAD SIZE: 0.138 INCHES SECOND END IN
•
CONNECTION STYLE: BARBED OR BEADED (HOSE) FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.094 INCHES FIRST END IN
•
THREAD CLASS: 2A SECOND END A
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST END
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.138 INCHES SECOND END IN
CONNECTION STYLEBARBED OR BEADED (HOSE) FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.094 INCHES FIRST END IN
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
THREAD CLASS2A SECOND END A
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.094 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST END
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SECOND END
NOMINAL OVERALL LENGTH1.750 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
149871Interchangeable
interchangeable cross-reference
interchangeable
189614Interchangeable
interchangeable cross-reference
interchangeable
4217Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 149871?
149871 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 149871?
There are 3 known substitutes for 149871: 149871, 189614, 4217. Substitute compatibility should be verified for your specific system.
What is the NSN for 149871?
149871 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-203-9222. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026