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023-18771 — UNION,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

023-18771: UNION,TUBE.

The UNION,TUBE is a the manufacturer industrial component. Key specifications include material: NICKEL AND COPPER ALLOY OVERALL, connection_type: UNTHREADED EXTERNAL TUBE FIRST END, connection_style: PLAIN (TUBE) FIRST END, special_features: 70/10 NICHOL-COPPER ALLOY, NEOPRENE O-RING, style_designator: UNTHREADED, end_item_identification: MARINEPAK UNIT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-533-7283, 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
023-18771
NSN: 4730-01-533-7283
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
materialNICKEL AND COPPER ALLOY OVERALL
connection_typeUNTHREADED EXTERNAL TUBE FIRST END
connection_stylePLAIN (TUBE) FIRST END
special_features70/10 NICHOL-COPPER ALLOY, NEOPRENE O-RING
style_designatorUNTHREADED
end_item_identificationMARINEPAK UNIT
furnished_items_and_quantity2 TAILPIECE AND 1 UNION NUT AND 1 PREFORMED PACKING
part_name_assigned_by_controlling_agencyUNION, BRAZE
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-01-533-7283
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 023-18771 · 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
•
FURNISHED ITEMS AND QUANTITY: 2 TAILPIECE AND 1 UNION NUT AND 1 PREFORMED PACKING
•
CONNECTION STYLE: SOCKET (TUBE) SECOND END
•
CONNECTION TYPE: UNTHREADED EXTERNAL TUBE FIRST END
•
STYLE DESIGNATOR: UNTHREADED
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 TAILPIECE AND 1 UNION NUT AND 1 PREFORMED PACKING
CONNECTION STYLESOCKET (TUBE) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
CONNECTION TYPEUNTHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPEUNTHREADED INTERNAL TUBE SECOND END
STYLE DESIGNATORUNTHREADED
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
SPECIAL FEATURES70/10 NICHOL-COPPER ALLOY, NEOPRENE O-RING
PART NAME ASSIGNED BY CONTROLLING AGENCYUNION, BRAZE
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
377-13259-000 ITEM 173Same 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 023-18771?
023-18771 is a UNION,TUBE.
What parts can replace 023-18771?
There is 1 known substitute for 023-18771: 377-13259-000 ITEM 173. Substitute compatibility should be verified for your specific system.
What is the NSN for 023-18771?
023-18771 is cataloged in the U.S. Government catalog under NSN 4730-01-533-7283. This indicates validated use in U.S. government and defense supply chains.
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