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4091D6 ✓ 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 NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYVINYL CHLORIDE (PVC) OVERALL, unit_type: COAXIAL LINE, body_width: 2.000 INCHES NOMINAL IN, flow_angle: 90.0 DEGREES, leg_length: 1.675 INCHES NOMINAL ALL ENDS IN, body_height: 3.062 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3242, 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
4091D6
NSN: 4730-00-278-3242
FSC: 4730
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
unit_typeCOAXIAL LINE
body_width2.000 INCHES NOMINAL IN
flow_angle90.0 DEGREES
leg_length1.675 INCHES NOMINAL ALL ENDS IN
body_height3.062 INCHES NOMINAL IN
body_length2.500 INCHES NOMINAL IN
design_typeUNIDIRECTIONAL
constructionONE-PIECE
overall_width17.000 INCHES NOMINAL IN
inclosure_typeENCASED
overall_height3.500 INCHES NOMINAL IN
NSN4730-00-278-3242
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4091D6 · 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 16
8154Interchangeable
interchangeable cross-reference
interchangeable
D15-460MPC269-270Interchangeable
interchangeable cross-reference
interchangeable
D15-615LPC269-270Interchangeable
interchangeable cross-reference
interchangeable
MS24392-4Interchangeable
interchangeable cross-reference
interchangeable
AN815-4Interchangeable
interchangeable cross-reference
interchangeable
8 T1Z(.250)Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4091D6?
4091D6 is a NIPPLE,TUBE.
What parts can replace 4091D6?
There are 16 known substitutes for 4091D6: 8154, D15-460MPC269-270, D15-615LPC269-270 and 13 more. Substitute compatibility should be verified for your specific system.
Is 4091D6 still available?
4091D6 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