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HQC4-B-4-316 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

HQC4-B-4-316: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, overall_length: 2.220 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END, quick_disconnect_nominal_size: 0.880 INCHES FIRST QUICK DISCONNECT END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-522-2575, 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
HQC4-B-4-316
NSN: 4730-01-522-2575
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL BODY
overall_length2.220 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
quick_disconnect_nominal_size0.880 INCHES FIRST QUICK DISCONNECT END IN
NSN4730-01-522-2575
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: HQC4-B-4-316 · 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 TYPE: INTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
•
QUICK DISCONNECT NOMINAL SIZE: 0.880 INCHES FIRST QUICK DISCONNECT END IN
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS
CONNECTION TYPEINTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
OVERALL LENGTH2.220 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE0.880 INCHES FIRST QUICK DISCONNECT END IN
MATERIALSTEEL 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HQC4-B-4-316?
HQC4-B-4-316 is a COUPLING HALF,QUICK DISCONNECT.
What is the NSN for HQC4-B-4-316?
HQC4-B-4-316 is cataloged in the U.S. Government catalog under NSN 4730-01-522-2575. 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.