PartsTable
Technical Data Sheet
215993 ✓ 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 INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.375 INCHES FIRST END IN, nominal_overall_length: 1.906 INCHES IN, thread_series_designator: NPT FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-374-8144, 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
215993
NSN: 4730-00-374-8144
FSC: 4730
CAGE: 72260 — CORBITT CO INC (USA)
SPECIFICATIONS
materialCOPPER OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.375 INCHES FIRST END IN
nominal_overall_length1.906 INCHES IN
thread_series_designatorNPT FIRST END
nominal_inside_diameter_hose_accommodated0.375 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated0.750 INCHES SECOND END IN
NSN4730-00-374-8144
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 215993 · 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
CASEHARDENING INDICATOR: NOT CASEHARDENED
SCREW THREAD SERIES DESIGNATOR: UNF
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
SMALLEST INSIDE DIAMETER: 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MATERIAL: COPPER ALLOY
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
SCREW THREAD SERIES DESIGNATORUNF
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED W/BRASS COMPRESSION SLEEVE PRESS FIT IN NUT
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
SMALLEST INSIDE DIAMETER0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY
THREAD DIRECTIONRIGHT-HAND
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
FABRICATION METHODBAR STOCK, MACHINED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
B0-29052-1Interchangeable
interchangeable cross-reference
interchangeable
503570Interchangeable
interchangeable cross-reference
interchangeable
504396Interchangeable
interchangeable cross-reference
interchangeable
11907Interchangeable
interchangeable cross-reference
interchangeable
215993Interchangeable
interchangeable cross-reference
interchangeable
BB-9225Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 215993?
215993 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 215993?
There are 13 known substitutes for 215993: B0-29052-1, 503570, 504396 and 10 more. Substitute compatibility should be verified for your specific system.
Is 215993 still available?
215993 is currently cancelled.
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