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41-WB-02 — INVERTED NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

41-WB-02: INVERTED NUT,TUBE COUPLING.

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thread_size: 5/16-28, overall_length: 0.520 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, FLARE, thread_direction: RIGHT-HAND, seat_angle_in_deg: 45.000. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-014-2430, 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
41-WB-02
NSN: 4730-00-014-2430
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_size5/16-28
overall_length0.520 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg45.000
width_across_flats0.313 INCHES NOMINAL IN
thread_pitch_diameters+0.2849 TO 0.2883 INCHES IN
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.130 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
nondefinitive_spec/std_data9 FIGURE
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN4730-00-014-2430
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 41-WB-02 · 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
•
WIDTH ACROSS FLATS: 0.313 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
•
THREAD PITCH DIAMETERS: +0.2849 TO 0.2883 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.313 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.000
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.125 INCHES NOMINAL IN
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
THREAD PITCH DIAMETERS+0.2849 TO 0.2883 INCHES IN
OVERALL LENGTH0.520 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA9 FIGURE
CASEHARDENING INDICATORNOT CASEHARDENED
SUBSTITUTES & CROSS-REFERENCES 6
2-040110BReference document
Same NSN cross-reference
Reference document — Secondary reference
2100X2Reference document
Same NSN cross-reference
Reference document — Secondary reference
J512Reference document
Same NSN cross-reference
Reference document — Secondary reference
100X2Reference document
Same NSN cross-reference
Reference document — Secondary reference
142430Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J512Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 41-WB-02?
41-WB-02 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 41-WB-02?
There are 6 known substitutes for 41-WB-02: 2-040110B, 2100X2, J512 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 41-WB-02?
41-WB-02 is cataloged in the U.S. Government catalog under NSN 4730-00-014-2430. 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.