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Technical Data Sheet
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144151 ✓ 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

COVER,ELECTRONIC COMMUNICATION E. Key specifications include material: IRON OVERALL, leg_length: 0.770 INCHES MINIMUM AND 0.850 INCHES MAXIMUM ALL ENDS IN, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, nominal_thread_size: 0.250 INCHES ALL ENDS IN, thread_series_designator: NPT ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-255-8254, 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
144151
NSN: 4730-00-255-8254
FSC: 4730
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialIRON OVERALL
leg_length0.770 INCHES MINIMUM AND 0.850 INCHES MAXIMUM ALL ENDS IN
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
nominal_thread_size0.250 INCHES ALL ENDS IN
thread_series_designatorNPT ALL ENDS
NSN4730-00-255-8254
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 144151 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
WWP521TYPE2Interchangeable
interchangeable cross-reference
interchangeable
ASME B16.3 CL 150 3/4X1 INCHInterchangeable
interchangeable cross-reference
interchangeable
MS39232-9Interchangeable
interchangeable cross-reference
interchangeable
WWP521Interchangeable
interchangeable cross-reference
interchangeable
7534Interchangeable
interchangeable cross-reference
interchangeable
MS39232-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 144151?
144151 is a COVER,ELECTRONIC COMMUNICATION E.
What parts can replace 144151?
There are 20 known substitutes for 144151: WWP521TYPE2, ASME B16.3 CL 150 3/4X1 INCH, MS39232-9 and 17 more. Substitute compatibility should be verified for your specific system.
Is 144151 still available?
144151 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026