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12311398 — COUPLING HALF,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

12311398: COUPLING HALF,SELF-SEALING.

The COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, overall_length: 1.250 INCHES NOMINAL IN, style_designator: MALE COUPLING HALF, features_provided: SELF-SEALING, surface_treatment: PASSIVATE BODY, operating_pressure: 2400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-188-3198, 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
12311398
NSN: 4730-01-188-3198
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
overall_length1.250 INCHES NOMINAL IN
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentPASSIVATE BODY
operating_pressure2400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
unpackaged_unit_width0.688 INCHES NOMINAL IN
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE DEGF
unpackaged_unit_height0.688 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BODY
NSN4730-01-188-3198
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12311398 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BODY
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
OPERATING PRESSURE: 2400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
UNPACKAGED UNIT WIDTH: 0.688 INCHES NOMINAL IN
•
FEATURES PROVIDED: SELF-SEALING
•
MAXIMUM OPERATING TEMP: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
UNPACKAGED UNIT HEIGHT: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BODY
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.250 INCHES NOMINAL IN
OPERATING PRESSURE2400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
UNPACKAGED UNIT WIDTH0.688 INCHES NOMINAL IN
FEATURES PROVIDEDSELF-SEALING
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE DEGF
UNPACKAGED UNIT HEIGHT0.688 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE BODY
MATERIALSTEEL CORROSION RESISTING BODY
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 12311398?
12311398 is a COUPLING HALF,SELF-SEALING.
What is the NSN for 12311398?
12311398 is cataloged in the U.S. Government catalog under NSN 4730-01-188-3198. 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.