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Technical Data Sheet

SPT 1390/7704.4 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SPT 1390/7704.4: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: PLAIN (TUBE) FIRST END, nominal_thread_size: 0.375 INCHES SECOND END IN, nominal_overall_length: 1.978 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-240-1685, 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
SPT 1390/7704.4
NSN: 4730-01-240-1685
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 32862 — SHIPS MACHINERY INTERNATIONAL, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_stylePLAIN (TUBE) FIRST END
nominal_thread_size0.375 INCHES SECOND END IN
nominal_overall_length1.978 INCHES IN
thread_series_designatorNPT SECOND END
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4730-01-240-1685
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SPT 1390/7704.4 · 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
•
CONNECTION STYLE: PLAIN (TUBE) FIRST END
•
NOMINAL OVERALL LENGTH: 1.978 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (TUBE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH1.978 INCHES IN
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
THREAD CLASS3B FIRST END
MATERIALSTEEL 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 1
7704.14-SPT 139Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SPT 1390/7704.4?
SPT 1390/7704.4 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace SPT 1390/7704.4?
There is 1 known substitute for SPT 1390/7704.4: 7704.14-SPT 139. Substitute compatibility should be verified for your specific system.
What is the NSN for SPT 1390/7704.4?
SPT 1390/7704.4 is cataloged in the U.S. Government catalog under NSN 4730-01-240-1685. This indicates validated use in U.S. government and defense supply chains.
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