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Technical Data Sheet
PartsTable / COMPONENT / 405-20343-1
405-20343-1 ✓ 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: 37.0 DEGREES, thread_class: 3A ALL ENDS A, overall_length: 2.840 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS, connection_style: FLARED 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 4730-00-541-7319, 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
405-20343-1
NSN: 4730-00-541-7319
FSC: 4730
CAGE: 81833 — AEROCONTROLEX GROUP, INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
seat_angle37.0 DEGREES
thread_class3A ALL ENDS A
overall_length2.840 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
connection_styleFLARED ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSAFETY LOCKING FEATURE
surface_treatmentANODIZE BODY
nominal_thread_size1.312 INCHES ALL ENDS IN
quick_disconnect_methodTWIST-LOCK ALL ENDS
thread_quantity_per_inch12 ALL ENDS
NSN4730-00-541-7319
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 405-20343-1 · 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
•
MATING END IDENTIFICATION: EASTERN AIRCRAFT PRODUCTS DIV OF WEATHERHEAD CO SOCKET HALF,PART NO.20342-1
•
THREAD SERIES DESIGNATOR: UN ALL ENDS
•
CONNECTION TYPE: INTERNAL QUICK DISCONNECT ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
MATERIAL: ALUMINUM ALLOY BODY
•
SEAT ANGLE: 37.0 DEGREES
•
QUICK DISCONNECT METHOD: TWIST-LOCK ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATING END IDENTIFICATIONEASTERN AIRCRAFT PRODUCTS DIV OF WEATHERHEAD CO SOCKET HALF,PART NO.20342-1
THREAD SERIES DESIGNATORUN ALL ENDS
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
THREAD CLASS3A ALL ENDS A
MATERIALALUMINUM ALLOY BODY
SEAT ANGLE37.0 DEGREES
QUICK DISCONNECT METHODTWIST-LOCK ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
STYLE DESIGNATORMALE COUPLING HALF
THREAD QUANTITY PER INCH12 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
20343-1Interchangeable
interchangeable cross-reference
interchangeable
20343Interchangeable
interchangeable cross-reference
interchangeable
7378336Interchangeable
interchangeable cross-reference
interchangeable
22337JInterchangeable
interchangeable cross-reference
interchangeable
3431Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 405-20343-1?
405-20343-1 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 405-20343-1?
There are 5 known substitutes for 405-20343-1: 20343-1, 20343, 7378336 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 405-20343-1?
405-20343-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-7319. 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