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W903B12D — FERRULE,BRAZING,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

W903B12D: FERRULE,BRAZING,TUBE FITTING.

The FERRULE,BRAZING,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, flange_width: 0.230 INCHES NOMINAL IN, overall_length: 0.783 INCHES MAXIMUM IN, style_designator: GASKET SEAL, casehardening_indicator: NOT CASEHARDENED, flange_outside_diameter: 0.994 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-134-8937, 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
W903B12D
NSN: 4730-01-134-8937
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79326 — TRANSDIGM INC DIV ADELWIGGINS GROUP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
flange_width0.230 INCHES NOMINAL IN
overall_length0.783 INCHES MAXIMUM IN
style_designatorGASKET SEAL
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.994 INCHES MAXIMUM IN
sleeve_outside_diameter0.890 INCHES NOMINAL IN
hose/tube_outside_diameter_for_which_designed0.750 INCHES NOMINAL IN
NSN4730-01-134-8937
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: W903B12D · 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
•
STYLE DESIGNATOR: GASKET SEAL
•
SLEEVE OUTSIDE DIAMETER: 0.890 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
FLANGE WIDTH: 0.230 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 6061
•
FLANGE OUTSIDE DIAMETER: 0.994 INCHES MAXIMUM IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORGASKET SEAL
OVERALL LENGTH0.783 INCHES MAXIMUM IN
SLEEVE OUTSIDE DIAMETER0.890 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
FLANGE WIDTH0.230 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 6061
FLANGE OUTSIDE DIAMETER0.994 INCHES MAXIMUM IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
ST7M406Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
14F13-12DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4730PL0735819Reference document
Same NSN cross-reference
Reference document — Informative reference only
ST7M406-12DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is W903B12D?
W903B12D is a FERRULE,BRAZING,TUBE FITTING.
What parts can replace W903B12D?
There are 4 known substitutes for W903B12D: ST7M406, 14F13-12D, 4730PL0735819 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W903B12D?
W903B12D is cataloged in the U.S. Government catalog under NSN 4730-01-134-8937. 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.