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EN18-105 ✓ 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 COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.570 INCHES NOMINAL SECOND END IN, seat_angle: 30.0 DEGREES SECOND END, sweep_type: SHORT, reducer_type: CONCENTRIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-4736, 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
EN18-105
NSN: 4730-00-289-4736
FSC: 4730
CAGE: 77260 — PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.570 INCHES NOMINAL SECOND END IN
seat_angle30.0 DEGREES SECOND END
sweep_typeSHORT
reducer_typeCONCENTRIC
nominal_length1.41 INCHES FIRST END IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresTEE PIPE
style_designatorCENTER WRENCHING FACILITY
surface_treatmentZINC OVERALL
NSN4730-00-289-4736
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: EN18-105 · 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 9
1078-6Interchangeable
interchangeable cross-reference
interchangeable
3200X6Interchangeable
interchangeable cross-reference
interchangeable
0921727-4Interchangeable
Same NIIN cross-reference
interchangeable
451855Interchangeable
Same NIIN cross-reference
interchangeable
6-130139BInterchangeable
Same NIIN cross-reference
interchangeable
J530Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is EN18-105?
EN18-105 is a COUPLING,PIPE.
What parts can replace EN18-105?
There are 9 known substitutes for EN18-105: 1078-6, 3200X6, 0921727-4 and 6 more. Substitute compatibility should be verified for your specific system.
Is EN18-105 still available?
EN18-105 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