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Technical Data Sheet
PartsTable / COMPONENT / AA50431-HMBZB00
AA50431-HMBZB00 ✓ 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: COPPER ALLOY BODY, leg_length: 1.625 INCHES MINIMUM IN, overall_length: 4.156 INCHES NOMINAL IN, connection_type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION, connection_style: BARBED OR SERRATED END ALL ENDS, style_designator: MALE COUPLING HALF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-6159, 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
AA50431-HMBZB00
NSN: 4730-00-277-6159
FSC: 4730
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
leg_length1.625 INCHES MINIMUM IN
overall_length4.156 INCHES NOMINAL IN
connection_typeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
quick_disconnect_methodTWIST-LOCK ALL ENDS
quick_disconnect_nominal_size1.016 INCHES ALL ENDS IN
material_document_and_classificationMIL-C-3486,TB 1 MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
nominal_inside_diameter_hose_accommodated0.438 INCHES ALL ENDS IN
NSN4730-00-277-6159
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AA50431-HMBZB00 · 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: EXTERNAL QUICK DISCONNECT ALL ENDS
•
LEG LENGTH: 1.625 INCHES MINIMUM IN
•
QUICK DISCONNECT METHOD: TWIST-LOCK ALL ENDS
•
QUICK DISCONNECT NOMINAL SIZE: 1.016 INCHES ALL ENDS IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-3486,TB 1 MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
•
MATERIAL: COPPER ALLOY BODY
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.438 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH4.156 INCHES NOMINAL IN
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
LEG LENGTH1.625 INCHES MINIMUM IN
QUICK DISCONNECT METHODTWIST-LOCK ALL ENDS
QUICK DISCONNECT NOMINAL SIZE1.016 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-3486,TB 1 MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
MATERIALCOPPER ALLOY BODY
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.438 INCHES ALL ENDS IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MILC3486Interchangeable
interchangeable cross-reference
interchangeable
AA50431Interchangeable
interchangeable cross-reference
interchangeable
AA50431-OMBZE10Interchangeable
interchangeable cross-reference
interchangeable
AA50431, CLASS OF, SIZE 1/2 INCHInterchangeable
interchangeable cross-reference
interchangeable
AA50431-OFBZC10Interchangeable
interchangeable cross-reference
interchangeable
75-B-YM-IIInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA50431-HMBZB00?
AA50431-HMBZB00 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace AA50431-HMBZB00?
There are 11 known substitutes for AA50431-HMBZB00: MILC3486, AA50431, AA50431-OMBZE10 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA50431-HMBZB00?
AA50431-HMBZB00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-6159. 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