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Technical Data Sheet
PartsTable / COMPONENT / 12 120111B
12 120111B ✓ 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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: TUBE COUPLING, nut_height: 1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN, seat_angle: 20.00 DEGREES NOMINAL, thread_series: UNS, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-050-4309, 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
12 120111B
NSN: 4730-00-050-4309
FSC: 4730
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleTUBE COUPLING
nut_height1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
seat_angle20.00 DEGREES NOMINAL
thread_seriesUNS
thread_directionRIGHT-HAND
length_to_shoulder0.750 INCHES NOMINAL IN
width_across_flats1.125 INCHES NOMINAL IN
nominal_thread_size1.000 INCHES IN
thread_pitch_diameters+0.9640 TO 0.9700 INCHES IN
smallest_inside_diameter0.758 INCHES NOMINAL IN
thread_quantity_per_inch18
NSN4730-00-050-4309
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12 120111B · 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 DIRECTION: RIGHT-HAND
•
THREAD SERIES: UNS
•
NUT STYLE: TUBE COUPLING
•
NUT HEIGHT: 1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
•
SMALLEST INSIDE DIAMETER: 0.758 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.750 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: 5 FIGURE
•
LENGTH TO SHOULDER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNS
NUT STYLETUBE COUPLING
NUT HEIGHT1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
SMALLEST INSIDE DIAMETER0.758 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.750 INCHES IN
NONDEFINITIVE SPEC/STD DATA5 FIGURE
LENGTH TO SHOULDER0.750 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 360 OVERALL
SPECIFICATION/STANDARD DATA81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
5-04309Interchangeable
interchangeable cross-reference
interchangeable
3341435-1Interchangeable
interchangeable cross-reference
interchangeable
J246Interchangeable
Same NIIN cross-reference
interchangeable
MS39196-6Interchangeable
Same NIIN cross-reference
interchangeable
4730000573118Interchangeable
Same NIIN cross-reference
interchangeable
SAE-J246Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12 120111B?
12 120111B is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 12 120111B?
There are 6 known substitutes for 12 120111B: 5-04309, 3341435-1, J246 and 3 more. Substitute compatibility should be verified for your specific system.
Is 12 120111B still available?
12 120111B 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