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QC4-B1-4PM — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

QC4-B1-4PM: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 2.890 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END, connection_style: PUSH (EXTERNAL) SECOND QUICK DISCONNECT END, end_item_identification: NSN 2320-01-447-6343, thread_series_designator: NPT SECOND QUICK DISCONNECT END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-596-8344, 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
QC4-B1-4PM
NSN: 4730-01-596-8344
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length2.890 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
connection_stylePUSH (EXTERNAL) SECOND QUICK DISCONNECT END
special_featuresTO COUPLE ALIGN STEM WITH BODY. PUSH STEM INTO BODY UNTIL IT "CLICKS". TO UNCOUPLE PULL BODY SLEEVE TOWARD STEM; MAXIMUM OPERATING PRESSURE COUPLED 3000 PSIG, BAR 206
end_item_identificationNSN 2320-01-447-6343
thread_series_designatorNPT SECOND QUICK DISCONNECT END
part_name_assigned_by_controlling_agencyQC4 BULKHEAD BODY
NSN4730-01-596-8344
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: QC4-B1-4PM · 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: PUSH (EXTERNAL) SECOND QUICK DISCONNECT END
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: NPT SECOND QUICK DISCONNECT END
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPUSH (EXTERNAL) SECOND QUICK DISCONNECT END
CONNECTION TYPEEXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
OVERALL LENGTH2.890 INCHES NOMINAL IN
SPECIAL FEATURESTO COUPLE ALIGN STEM WITH BODY. PUSH STEM INTO BODY UNTIL IT "CLICKS". TO UNCOUPLE PULL BODY SLEEVE TOWARD STEM; MAXIMUM OPERATING PRESSURE COUPLED 3000 PSIG, BAR 206
PART NAME ASSIGNED BY CONTROLLING AGENCYQC4 BULKHEAD BODY
END ITEM IDENTIFICATIONNSN 2320-01-447-6343
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT SECOND QUICK DISCONNECT END
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is QC4-B1-4PM?
QC4-B1-4PM is a COUPLING HALF,QUICK DISCONNECT.
What is the NSN for QC4-B1-4PM?
QC4-B1-4PM is cataloged in the U.S. Government catalog under NSN 4730-01-596-8344. 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.