PartsTable
Technical Data Sheet
5381903 ✓ 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

CONNECTOR,MULTIPLE,FLUID PRESSUR. Key specifications include material: STEEL, thickness: 0.750 INCHES NOMINAL IN, thread_size: 1/8 IN.-27 SECOND CONNECTION IN, overall_width: 0.750 INCHES NOMINAL IN, overall_length: 1.380 INCHES NOMINAL IN, connection_style: PLAIN SECOND CONNECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-538-1903, 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
5381903
NSN: 4730-00-538-1903
FSC: 4730
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL
thickness0.750 INCHES NOMINAL IN
thread_size1/8 IN.-27 SECOND CONNECTION IN
overall_width0.750 INCHES NOMINAL IN
overall_length1.380 INCHES NOMINAL IN
connection_stylePLAIN SECOND CONNECTION
style_designator4 FLUID CONNECTIONS
thread_directionRIGHT-HAND SECOND CONNECTION
bolt_hole_fluid_passageNOT PROVIDED
fluid_connection_quantity1 FIRST CONNECTION
bolt_hole_flats_serrationsNOT PROVIDED
screw_thread_series_designatorNPT SECOND CONNECTION
NSN4730-00-538-1903
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5381903 · 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
FLUID CONVEYANCE TYPE AND SIZE FOR WHICH DESIGNED: 1/8 IN. PIPE,1/8 IN. PIPE IN
SCREW THREAD SERIES DESIGNATOR: NPT FIRST CONNECTION
CONNECTION STYLE: COMPRESSION FIRST CONNECTION
THREAD DIRECTION: RIGHT-HAND FIRST CONNECTION
FLUID CONNECTION QUANTITY: 1 FIRST CONNECTION
THREAD SIZE: 1/8 IN.-27 SECOND CONNECTION IN
TECHNICAL CHARACTERISTICS (FLIS)
FLUID CONVEYANCE TYPE AND SIZE FOR WHICH DESIGNED1/8 IN. PIPE,1/8 IN. PIPE IN
SCREW THREAD SERIES DESIGNATORNPT FIRST CONNECTION
CONNECTION STYLECOMPRESSION FIRST CONNECTION
THREAD DIRECTIONRIGHT-HAND FIRST CONNECTION
FLUID CONNECTION QUANTITY1 FIRST CONNECTION
FLUID CONNECTION QUANTITY3 SECOND CONNECTION
THREAD SIZE1/8 IN.-27 SECOND CONNECTION IN
CONNECTION STYLEPLAIN SECOND CONNECTION
OVERALL LENGTH1.380 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND SECOND CONNECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
314950Interchangeable
interchangeable cross-reference
interchangeable
332Interchangeable
interchangeable cross-reference
interchangeable
5020WInterchangeable
interchangeable cross-reference
interchangeable
HD250Interchangeable
interchangeable cross-reference
interchangeable
142414R91Interchangeable
interchangeable cross-reference
interchangeable
203-395Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5381903?
5381903 is a CONNECTOR,MULTIPLE,FLUID PRESSUR.
What parts can replace 5381903?
There are 7 known substitutes for 5381903: 314950, 332, 5020W and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5381903?
5381903 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-538-1903. This indicates validated use in U.S. government and defense supply chains.
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