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3779919 ✓ 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 PLUG,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: RECESSED HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-649-8976, 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
3779919
NSN: 4730-01-649-8976
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleRECESSED HEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size0.375 INCHES EXTERNAL IN
thread_series_designatorNPS EXTERNAL
nominal_pipe_size_for_which_designed0.375 INCHES IN
NSN4730-01-649-8976
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3779919 · 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 7
C3169X6Interchangeable
interchangeable cross-reference
interchangeable
145-4510925M18Interchangeable
interchangeable cross-reference
interchangeable
E74971Interchangeable
interchangeable cross-reference
interchangeable
125538Interchangeable
interchangeable cross-reference
interchangeable
P49685Interchangeable
interchangeable cross-reference
interchangeable
3-8HHPSInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3779919?
3779919 is a PLUG,PIPE.
What parts can replace 3779919?
There are 7 known substitutes for 3779919: C3169X6, 145-4510925M18, E74971 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3779919?
3779919 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-649-8976. 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