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2-03018V12 — NUT,TUBE COUPLING,REDUCING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2-03018V12: NUT,TUBE COUPLING,REDUCING.

The NUT,TUBE COUPLING,REDUCING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, nut_style: TUBE COUPLING, nut_height: 0.888 INCHES MINIMUM AND 0.918 INCHES MAXIMUM IN, seat_angle: 45.0 DEGREES NOMINAL, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT (UNJ). This part is cataloged in the U.S.

Government catalog under NSN 4730-01-040-3272, 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
2-03018V12
NSN: 4730-01-040-3272
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
nut_styleTUBE COUPLING
nut_height0.888 INCHES MINIMUM AND 0.918 INCHES MAXIMUM IN
seat_angle45.0 DEGREES NOMINAL
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
length_to_shoulder0.629 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN
width_across_flats1.184 INCHES MINIMUM AND 1.191 INCHES MAXIMUM IN
nominal_thread_size1.062 INCHES IN
smallest_inside_diameter0.826 INCHES MINIMUM AND 0.831 INCHES MAXIMUM IN
NSN4730-01-040-3272
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2-03018V12 · 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
•
LENGTH TO SHOULDER: 0.629 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 1.184 INCHES MINIMUM AND 1.191 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT (UNJ)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SEAT ANGLE: 45.0 DEGREES NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.062 INCHES IN
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.629 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN
WIDTH ACROSS FLATS1.184 INCHES MINIMUM AND 1.191 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT (UNJ)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SEAT ANGLE45.0 DEGREES NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.062 INCHES IN
NUT HEIGHT0.888 INCHES MINIMUM AND 0.918 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OVERALL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 5
35220-4-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
GA7432V12Reference document
Same NSN cross-reference
Reference document — Secondary reference
GA432V12Reference document
Same NSN cross-reference
Reference document — Secondary reference
D8998V12Reference document
Same NSN cross-reference
Reference document — Secondary reference
STSPB804V12Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2-03018V12?
2-03018V12 is a NUT,TUBE COUPLING,REDUCING.
What parts can replace 2-03018V12?
There are 5 known substitutes for 2-03018V12: 35220-4-12, GA7432V12, GA432V12 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-03018V12?
2-03018V12 is cataloged in the U.S. Government catalog under NSN 4730-01-040-3272. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.