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023-18531 — CONNECTOR,TUBING,STRAIGHT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

023-18531: CONNECTOR,TUBING,STRAIGHT.

The CONNECTOR,TUBING,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, special_features: THREADS 3/4-16 UNF 2A OR 3A; O-RINGS VITON A, end_item_identification: R-134A, STBD A A, tubing_outside_diameter: 0.250 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: CONNECTOR, UNION BRAZE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-609-5818, 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
023-18531
NSN: 4730-01-609-5818
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
special_featuresTHREADS 3/4-16 UNF 2A OR 3A; O-RINGS VITON A
end_item_identificationR-134A, STBD A A
tubing_outside_diameter0.250 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyCONNECTOR, UNION BRAZE
NSN4730-01-609-5818
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 023-18531 · 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
•
TUBING OUTSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
TUBING OUTSIDE DIAMETER0.250 INCHES NOMINAL IN
SPECIAL FEATURESTHREADS 3/4-16 UNF 2A OR 3A; O-RINGS VITON A
PART NAME ASSIGNED BY CONTROLLING AGENCYCONNECTOR, UNION BRAZE
END ITEM IDENTIFICATIONR-134A, STBD A A
MATERIALSTEEL CORROSION RESISTING
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
376-88389-000 ITEM 100Reference 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 023-18531?
023-18531 is a CONNECTOR,TUBING,STRAIGHT.
What parts can replace 023-18531?
There is 1 known substitute for 023-18531: 376-88389-000 ITEM 100. Substitute compatibility should be verified for your specific system.
What is the NSN for 023-18531?
023-18531 is cataloged in the U.S. Government catalog under NSN 4730-01-609-5818. 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.