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D121204L — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

D121204L: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2014 OVERALL, leg_length: 1.142 INCHES NOMINAL THIRD END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A THIRD END A, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: FLARELESS (TUBE) THIRD END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-229-9679, 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
D121204L
NSN: 4730-01-229-9679
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30974 — AEROFIT, LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2014 OVERALL
leg_length1.142 INCHES NOMINAL THIRD END IN
seat_angle12.0 DEGREES ALL ENDS
thread_class3A THIRD END A
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) THIRD END
surface_treatmentANODIZE OVERALL
nominal_thread_size0.438 INCHES THIRD END IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST END
specification/standard_data81205-BACT16AY MANUFACTURERS STANDARD
nominal_outside_diameter_tube_accommodated0.750 INCHES SECOND END IN
NSN4730-01-229-9679
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D121204L · 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: SWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE THIRD END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
CONNECTION STYLEFLARELESS (TUBE) THIRD END
CONNECTION STYLEFLARELESS (TUBE) SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE THIRD END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES THIRD END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
LEG LENGTH1.560 INCHES NOMINAL SECOND 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 1
BACT16AYReference document
Same NSN cross-reference
Reference document — Secondary reference
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 D121204L?
D121204L is a TEE,TUBE.
What parts can replace D121204L?
There is 1 known substitute for D121204L: BACT16AY. Substitute compatibility should be verified for your specific system.
What is the NSN for D121204L?
D121204L is cataloged in the U.S. Government catalog under NSN 4730-01-229-9679. 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.