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3864-191PC54 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3864-191PC54: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 482 OVERALL, connection_type: UNTHREADED EXTERNAL PIPE SECOND ENDUNTHREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END, operating_pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_overall_length: 1.500 INCHES IN, media_for_which_designed: REFRIGERATION COMPOUND SECOND RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-375-7701, 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
3864-191PC54
NSN: 4730-00-375-7701
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialCOPPER ALLOY 482 OVERALL
connection_typeUNTHREADED EXTERNAL PIPE SECOND ENDUNTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_overall_length1.500 INCHES IN
media_for_which_designedREFRIGERATION COMPOUND SECOND RESPONSE
nominal_pipe_size_accommodated0.375 INCHES SECOND END0.375 INCHES SECOND END IN
material_document_and_classificationMIL-B-994,COMP B,1/2 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.625 INCHES FIRST END IN
tubing_wall_nominal_thickness_for_which_designed0.035 INCHES FIRST END IN
NSN4730-00-375-7701
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3864-191PC54 · 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
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.375 INCHES SECOND END0.375 INCHES SECOND END IN
•
CONNECTION STYLE: PLAIN (TUBE) FIRST ENDPLAIN (TUBE) FIRST END
•
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.035 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.500 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL PIPE SECOND ENDUNTHREADED EXTERNAL PIPE SECOND END
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-994,COMP B,1/2 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES SECOND END0.375 INCHES SECOND END IN
CONNECTION STYLEPLAIN (TUBE) FIRST ENDPLAIN (TUBE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.035 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.500 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND ENDUNTHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPEUNTHREADED EXTERNAL TUBE FIRST ENDUNTHREADED EXTERNAL TUBE FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-994,COMP B,1/2 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES FIRST END IN
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
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
340-5901-1002651PC54Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3864-191PC54?
3864-191PC54 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 3864-191PC54?
There is 1 known substitute for 3864-191PC54: 340-5901-1002651PC54. Substitute compatibility should be verified for your specific system.
What is the NSN for 3864-191PC54?
3864-191PC54 is cataloged in the U.S. Government catalog under NSN 4730-00-375-7701. 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.