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921E394 — COUPLING,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

921E394: COUPLING,PIPE.

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 30.0 DEGREES FIRST END, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND END, style_designator: THREADED EXTERNAL RIGID, THREADED INTERNAL SWIVEL, nominal_thread_size: 0.250 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-214-6981, 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
921E394
NSN: 4730-01-214-6981
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 59042 — CBS BROADCASTING INC. DBA CBS DIV BECHTEL PLANT MACHINERY INC. - PITTSBURGH (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle30.0 DEGREES FIRST END
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
style_designatorTHREADED EXTERNAL RIGID, THREADED INTERNAL SWIVEL
nominal_thread_size0.250 INCHES ALL ENDS IN
nominal_overall_length1.250 INCHES IN
thread_series_designatorNPSM SECOND END
nondefinitive_spec/std_data26 FIGURE
specification/standard_data81343-J516 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
reduced_passage_nominal_inside_diameter0.203 INCHES SECOND END IN
NSN4730-01-214-6981
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 921E394 · 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 INVERTED FLARE (PIPE) FIRST END
•
NOMINAL OVERALL LENGTH: 1.250 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
STYLE DESIGNATOR: THREADED EXTERNAL RIGID, THREADED INTERNAL SWIVEL
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.203 INCHES SECOND END IN
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWIVEL NUT INVERTED FLARE (PIPE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH1.250 INCHES IN
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
STYLE DESIGNATORTHREADED EXTERNAL RIGID, THREADED INTERNAL SWIVEL
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.203 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
SEAT ANGLE30.0 DEGREES FIRST END
SPECIFICATION/STANDARD DATA81343-J516 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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 7
4-4 140130SReference document
Same NSN cross-reference
Reference document — Secondary reference
J516Reference document
Same NSN cross-reference
Reference document — Secondary reference
010704040SReference document
Same NSN cross-reference
Reference document — Secondary reference
921E394 ITEM 23Reference document
Same NSN cross-reference
Reference document — Secondary reference
64SA-04X04Reference document
Same NSN cross-reference
Reference document — Secondary reference
4-4 0107-SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 921E394?
921E394 is a COUPLING,PIPE.
What parts can replace 921E394?
There are 7 known substitutes for 921E394: 4-4 140130S, J516, 010704040S and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 921E394?
921E394 is cataloged in the U.S. Government catalog under NSN 4730-01-214-6981. This indicates validated use in U.S. government and defense supply chains.
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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.