PartsTable
Technical Data Sheet
MS39181-6 ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 20.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARELESS (TUBE) FIRST END, nominal_thread_size: 0.500 INCHES SECOND END 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 4730-00-403-0877, 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
MS39181-6
NSN: 4730-00-403-0877
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle20.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) FIRST END
nominal_thread_size0.500 INCHES SECOND END IN
nominal_overall_length1.510 INCHES IN
thread_quantity_per_inch18 FIRST END
thread_series_designatorUNS FIRST END
nondefinitive_spec/std_data1C FIGURE
specification/standard_data96906-MS39181 GOVERNMENT STANDARD AND 81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
furnished_items_and_quantity1 TUBE COUPLING NUT W/SLEEVE
NSN4730-00-403-0877
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS39181-6 · 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
THREAD SERIES DESIGNATOR: UNS FIRST END
NOMINAL OVERALL LENGTH: 1.510 INCHES IN
SPECIFICATION/STANDARD DATA: 96906-MS39181 GOVERNMENT STANDARD AND 81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
SEAT ANGLE: 20.0 DEGREES FIRST END
NONDEFINITIVE SPEC/STD DATA: 1C FIGURE
NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNS FIRST END
NOMINAL OVERALL LENGTH1.510 INCHES IN
THREAD SERIES DESIGNATORNPTF SECOND END
SPECIFICATION/STANDARD DATA96906-MS39181 GOVERNMENT STANDARD AND 81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
SEAT ANGLE20.0 DEGREES FIRST END
NONDEFINITIVE SPEC/STD DATA1C FIGURE
NOMINAL THREAD SIZE0.500 INCHES SECOND END IN
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
J246Interchangeable
interchangeable cross-reference
interchangeable
972906R91Interchangeable
interchangeable cross-reference
interchangeable
62AB-10Interchangeable
interchangeable cross-reference
interchangeable
205418Interchangeable
interchangeable cross-reference
interchangeable
BB9168Interchangeable
interchangeable cross-reference
interchangeable
10-12 120102BAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS39181-6?
MS39181-6 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace MS39181-6?
There are 28 known substitutes for MS39181-6: J246, 972906R91, 62AB-10 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS39181-6?
MS39181-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-403-0877. This indicates validated use in U.S. government and defense supply chains.
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