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PartsTable / COMPONENT / AA50431 CLASS H.F.-1/2 INCH
AA50431 CLASS H.F.-1/2 INCH ✓ 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 AA50431 CLASS H.F.-1/2 INCH is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-4247, 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 CLASS H.F.-1/2 INCH
NSN: 4730-00-289-4247
FSC: 4730
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberAA50431 CLASS H.F.-1/2 INCH
NSN4730-00-289-4247
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AA50431 CLASS H.F.-1/2 INCH · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
•
MATERIAL: COPPER ALLOY BODY
•
NONDEFINITIVE SPEC/STD DATA: H.F. CLASS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-3486,TB 1 MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
•
QUICK DISCONNECT NOMINAL SIZE: 0.781 INCHES ALL ENDS IN
•
LEG LENGTH: 1.125 INCHES MINIMUM IN
•
CONNECTION STYLE: BARBED OR SERRATED END ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.500 INCHES ALL ENDS IN
MATERIALCOPPER ALLOY BODY
NONDEFINITIVE SPEC/STD DATAH.F. CLASS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-3486,TB 1 MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
QUICK DISCONNECT NOMINAL SIZE0.781 INCHES ALL ENDS IN
LEG LENGTH1.125 INCHES MINIMUM IN
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
QUICK DISCONNECT METHODTWIST-LOCK 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 CLASS H.F.-1/2 INCH?
AA50431 CLASS H.F.-1/2 INCH is a AA50431 CLASS H.F.-1/2 INCH.
What parts can replace AA50431 CLASS H.F.-1/2 INCH?
There are 11 known substitutes for AA50431 CLASS H.F.-1/2 INCH: MILC3486, AA50431, AA50431-OMBZE10 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA50431 CLASS H.F.-1/2 INCH?
AA50431 CLASS H.F.-1/2 INCH is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-4247. 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