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Technical Data Sheet
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ST2123-04 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST2123-04: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM THIRD END IN, seat_angle: 37.0 DEGREES THIRD END, thread_class: 3A THIRD END A, connection_type: THREADED EXTERNAL TUBE THIRD END, connection_style: PLAIN (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-064-9348, 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
ST2123-04
NSN: 4730-01-064-9348
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM THIRD END IN
seat_angle37.0 DEGREES THIRD END
thread_class3A THIRD END A
connection_typeTHREADED EXTERNAL TUBE THIRD END
connection_stylePLAIN (TUBE) FIRST END
nominal_thread_size0.438 INCHES THIRD END IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) THIRD END
material_document_and_classificationAMS5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.403 INCHES FIRST END IN
NSN4730-01-064-9348
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST2123-04 · 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
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES THIRD END IN
•
LEG LENGTH: 0.492 INCHES MINIMUM AND 0.512 INCHES MAXIMUM FIRST END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (TUBE) FIRST END
CONNECTION STYLEFLARED (TUBE) THIRD END
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE THIRD END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES THIRD END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.403 INCHES FIRST END IN
LEG LENGTH0.492 INCHES MINIMUM AND 0.512 INCHES MAXIMUM FIRST END IN
LEG LENGTH0.492 INCHES MINIMUM AND 0.512 INCHES MAXIMUM SECOND END IN
LEG LENGTH0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM THIRD END 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
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is ST2123-04?
ST2123-04 is a TEE,TUBE.
What is the NSN for ST2123-04?
ST2123-04 is cataloged in the U.S. Government catalog under NSN 4730-01-064-9348. This indicates validated use in U.S. government and defense supply chains.
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