PartsTable
Technical Data Sheet
CQ3 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include length: 0.625 INCHES NOMINAL IN, end_type: PROCESSED END, material: STEEL COMP 303, overall_length: 4.125 INCHES NOMINAL IN, connection_type: UNTHREADED INTERNAL HOSE FIRST FLUID END CONNECTION, furnished_items: GASKET AND SLEEVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-264-5420, 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
CQ3
NSN: 4730-00-264-5420
FSC: 4730
CAGE: 06UZ8 — PAULI SYSTEMS, INC. DBA PAULI SYSTEMS INC (USA)
SPECIFICATIONS
length0.625 INCHES NOMINAL IN
end_typePROCESSED END
materialSTEEL COMP 303
overall_length4.125 INCHES NOMINAL IN
connection_typeUNTHREADED INTERNAL HOSE FIRST FLUID END CONNECTION
furnished_itemsGASKET AND SLEEVE
connection_styleSOCKET ALL ENDS
shaft_end_designMALE
special_featuresMIN OF 4 COUNTERSET HOLES IN SLEEVE FOR WOOD SCREWS
style_designatorMALE COUPLING HALF
surface_treatmentPASSIVATE
shaft_end_diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
NSN4730-00-264-5420
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: CQ3 · 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: SOCKET ALL ENDS
FURNISHED ITEMS: GASKET AND SLEEVE
CONNECTION TYPE: UNTHREADED INTERNAL HOSE FIRST FLUID END CONNECTION
STYLE DESIGNATOR: MALE COUPLING HALF
QUICK DISCONNECT METHOD: TWO LUG UNIVERSAL ALL ENDS
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLESOCKET ALL ENDS
FURNISHED ITEMSGASKET AND SLEEVE
CONNECTION TYPEUNTHREADED INTERNAL HOSE FIRST FLUID END CONNECTION
STYLE DESIGNATORMALE COUPLING HALF
SPECIAL FEATURESMIN OF 4 COUNTERSET HOLES IN SLEEVE FOR WOOD SCREWS
QUICK DISCONNECT METHODTWO LUG UNIVERSAL ALL ENDS
MATERIALCOPPER ALLOY BODY
OVERALL LENGTH4.125 INCHES NOMINAL IN
FIRST END OUTSIDE DIAMETER HOSE ACCOMMODATED2.156 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
564Interchangeable
interchangeable cross-reference
interchangeable
CQ2Interchangeable
interchangeable cross-reference
interchangeable
60311Interchangeable
interchangeable cross-reference
interchangeable
SC-C-53365Interchangeable
interchangeable cross-reference
interchangeable
M15515-20Interchangeable
interchangeable cross-reference
interchangeable
ATD2097Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CQ3?
CQ3 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace CQ3?
There are 18 known substitutes for CQ3: 564, CQ2, 60311 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CQ3?
CQ3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-264-5420. This indicates validated use in U.S. government and defense supply chains.
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