PartsTable
Technical Data Sheet
157221 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 2A FIRST END A, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: DOUBLE COMPRESSION (TUBE) FIRST END, special_features: HYDRAULIC, nominal_thread_size: 0.125 INCHES SECOND END IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-288-9930, 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
MRO MRO_GENERAL 157221
NSN: 4730-00-288-9930
FSC: 4730
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2A FIRST END A
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleDOUBLE COMPRESSION (TUBE) FIRST END
special_featuresHYDRAULIC
nominal_thread_size0.125 INCHES SECOND END IN
seat_nominal_radius0.062 INCHES FIRST END IN
nominal_overall_length0.750 INCHES IN
end_item_identificationGRUMMAN A-10 ACFT
thread_quantity_per_inch24 FIRST END
thread_series_designatorUNS FIRST END
criticality_code_justificationZZZY
NSN4730-00-288-9930
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 157221 · 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
CONNECTION STYLE: PLAIN (PIPE) SECOND END
THREAD SERIES DESIGNATOR: NPTF SECOND END
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
THREAD CLASS: 2A FIRST END A
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION STYLEDOUBLE COMPRESSION (TUBE) FIRST END
THREAD SERIES DESIGNATORNPTF SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
THREAD CLASS2A FIRST END A
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
THREAD SERIES DESIGNATORUNS FIRST END
END ITEM IDENTIFICATIONGRUMMAN A-10 ACFT
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES SECOND END IN
SEAT NOMINAL RADIUS0.062 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
6200X5Interchangeable
interchangeable cross-reference
interchangeable
16-122Interchangeable
interchangeable cross-reference
interchangeable
169983Interchangeable
interchangeable cross-reference
interchangeable
CNDX1Interchangeable
interchangeable cross-reference
interchangeable
106-20006Interchangeable
interchangeable cross-reference
interchangeable
114885Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 157221?
157221 is a ADAPTER,STRAIGHT,PIPE TO TUBE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 157221?
There are 18 known substitutes for 157221: 6200X5, 16-122, 169983 and 15 more. Substitute compatibility should be verified for your specific system.
Is 157221 still available?
157221 is currently cancelled.
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