PartsTable
Technical Data Sheet

4J 3/4 — FERRULE,SWAGE,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4J 3/4: FERRULE,SWAGE,TUBE COUPLING.

The FERRULE,SWAGE,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ZINC, special_features: TYPE J,TENSILE STRENGTH 41,000 PSI,CAN BE USED WITH SLEEVES OF ANY CONSTRUCTION, casehardening_indicator: NOT CASEHARDENED, hose/tube_outside_diameter_for_which_designed: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-339-3079, 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
4J 3/4
NSN: 4730-01-339-3079
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79425 — TB WOODS'S CORPORATION (USA)
SPECIFICATIONS
materialZINC
special_featuresTYPE J,TENSILE STRENGTH 41,000 PSI,CAN BE USED WITH SLEEVES OF ANY CONSTRUCTION
casehardening_indicatorNOT CASEHARDENED
hose/tube_outside_diameter_for_which_designed0.750 INCHES NOMINAL IN
NSN4730-01-339-3079
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4J 3/4 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ZINC
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CASEHARDENING INDICATORNOT CASEHARDENED
SPECIAL FEATURESTYPE J,TENSILE STRENGTH 41,000 PSI,CAN BE USED WITH SLEEVES OF ANY CONSTRUCTION
MATERIALZINC
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4J 3/4?
4J 3/4 is a FERRULE,SWAGE,TUBE COUPLING.
What is the NSN for 4J 3/4?
4J 3/4 is cataloged in the U.S. Government catalog under NSN 4730-01-339-3079. 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.