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Technical Data Sheet
PartsTable / COMPONENT / 664430-5
664430-5 ✓ 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 material: ALUMINUM ALLOY BODY, seat_angle: 12.0 DEGREES, thread_class: 3A ALL ENDS A, overall_length: 2.785 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS, connection_style: FLARELESS ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-5263, 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
664430-5
NSN: 4730-00-891-5263
FSC: 4730
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
seat_angle12.0 DEGREES
thread_class3A ALL ENDS A
overall_length2.785 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
connection_styleFLARELESS ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodTWIST-LOCK ALL ENDS
thread_series_designatorUNF ALL ENDS
NSN4730-00-891-5263
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 664430-5 · 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
•
THREAD CLASS: 3A ALL ENDS A
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
CONNECTION STYLE: FLARELESS ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
CONNECTION TYPE: INTERNAL QUICK DISCONNECT ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A ALL ENDS A
THREAD SERIES DESIGNATORUNF ALL ENDS
CONNECTION STYLEFLARELESS ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
QUICK DISCONNECT METHODTWIST-LOCK ALL ENDS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
10-20093Interchangeable
interchangeable cross-reference
interchangeable
EPC11810Interchangeable
interchangeable cross-reference
interchangeable
3305-8Interchangeable
interchangeable cross-reference
interchangeable
AE93588HInterchangeable
interchangeable cross-reference
interchangeable
11687222Interchangeable
interchangeable cross-reference
interchangeable
717218-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 664430-5?
664430-5 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 664430-5?
There are 12 known substitutes for 664430-5: 10-20093, EPC11810, 3305-8 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 664430-5?
664430-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-5263. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026