PartsTable
Technical Data Sheet
N4-6-5045 ✓ 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 is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 1.094 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 3B, thread_series: UNF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-427-5118, 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
N4-6-5045
NSN: 4730-00-427-5118
FSC: 4730
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height1.094 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
fabrication_methodFORGED
length_to_shoulder0.500 INCHES NOMINAL IN
width_across_flats0.875 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
smallest_inside_diameter0.375 INCHES NOMINAL IN
NSN4730-00-427-5118
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: N4-6-5045 · 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
THREAD SERIES: UNF
LENGTH TO SHOULDER: 0.500 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY OVERALL
THREAD CLASS: 3B
SEAT ANGLE: 45.00 DEGREES NOMINAL
NUT STYLE: TUBE COUPLING
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
LENGTH TO SHOULDER0.500 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER0.375 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD CLASS3B
SEAT ANGLE45.00 DEGREES NOMINAL
NUT STYLETUBE COUPLING
THREAD QUANTITY PER INCH18
NUT HEIGHT1.094 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
13X72Interchangeable
interchangeable cross-reference
interchangeable
115287Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEAInterchangeable
interchangeable cross-reference
interchangeable
417077-3Interchangeable
interchangeable cross-reference
interchangeable
A-441Interchangeable
interchangeable cross-reference
interchangeable
4150X17-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N4-6-5045?
N4-6-5045 is a NUT,TUBE COUPLING.
What parts can replace N4-6-5045?
There are 10 known substitutes for N4-6-5045: 13X72, 115287, FFB571TYPEA and 7 more. Substitute compatibility should be verified for your specific system.
Is N4-6-5045 still available?
N4-6-5045 is currently cancelled.
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