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PartsTable / COMPONENT / NAF1189-3
NAF1189-3 ✓ 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 NUT,TUBE COUPLING,REDUCING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: TUBE COUPLING, nut_height: 0.781 INCHES NOMINAL IN, thread_class: 2B, thread_series: NGO, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-433-4386, 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
NAF1189-3
NSN: 4730-00-433-4386
FSC: 4730
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleTUBE COUPLING
nut_height0.781 INCHES NOMINAL IN
thread_class2B
thread_seriesNGO
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
fabrication_methodMACHINED
width_across_flats1.125 INCHES NOMINAL IN
nominal_thread_size0.906 INCHES IN
smallest_inside_diameter0.556 INCHES NOMINAL IN
thread_quantity_per_inch14
NSN4730-00-433-4386
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: NAF1189-3 · 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
•
MATERIAL: STEEL OVERALL
•
NUT STYLE: TUBE COUPLING
•
THREAD CLASS: 2B
•
NUT HEIGHT: 0.781 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.500 INCHES IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
FABRICATION METHOD: MACHINED
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
NUT STYLETUBE COUPLING
THREAD CLASS2B
NUT HEIGHT0.781 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.500 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
FABRICATION METHODMACHINED
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESNGO
WIDTH ACROSS FLATS1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
H9756Interchangeable
interchangeable cross-reference
interchangeable
9756Interchangeable
interchangeable cross-reference
interchangeable
H66296Interchangeable
interchangeable cross-reference
interchangeable
491697Interchangeable
interchangeable cross-reference
interchangeable
7312360Interchangeable
interchangeable cross-reference
interchangeable
1000A29ALT2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAF1189-3?
NAF1189-3 is a NUT,TUBE COUPLING,REDUCING.
What parts can replace NAF1189-3?
There are 13 known substitutes for NAF1189-3: H9756, 9756, H66296 and 10 more. Substitute compatibility should be verified for your specific system.
Is NAF1189-3 still available?
NAF1189-3 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