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MILC3486 ✓ 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, flow_angle: 45.0 DEGREES, leg_length: 1.625 INCHES MINIMUM IN, overall_length: 4.156 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT ALL ENDS, furnished_items: PREFORMED PACKING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-5675, 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
MILC3486
NSN: 4730-00-277-5675
FSC: 4730
CAGE: 95138 — DIXON VALVE & COUPLING COMPANY, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
flow_angle45.0 DEGREES
leg_length1.625 INCHES MINIMUM IN
overall_length4.156 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT ALL ENDS
furnished_itemsPREFORMED PACKING
connection_stylePLAIN ALL ENDS
special_features1ST LEG NOM.SIZE 0.750,SECOND LEG NOM.SIZE 0.500,THIRD LEG NOM.SIZE 0.500
style_designatorMALE COUPLING HALF
nominal_thread_size1.250 INCHES ALL ENDS IN
quick_disconnect_methodTWIST-LOCK ALL ENDS
thread_series_designatorNPT ALL ENDS
NSN4730-00-277-5675
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MILC3486 · 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
•
QUICK DISCONNECT NOMINAL SIZE: 1.312 INCHES ALL ENDS IN
•
CONNECTION STYLE: BARBED OR SERRATED END ALL ENDS
•
LEG LENGTH: 2.109 INCHES NOMINAL IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
•
NONDEFINITIVE SPEC/STD DATA: HF CLASS
•
MATERIAL: COPPER ALLOY BODY
•
STYLE DESIGNATOR: MALE COUPLING HALF
TECHNICAL CHARACTERISTICS (FLIS)
QUICK DISCONNECT NOMINAL SIZE1.312 INCHES ALL ENDS IN
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
LEG LENGTH2.109 INCHES NOMINAL IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
NONDEFINITIVE SPEC/STD DATAHF CLASS
MATERIALCOPPER ALLOY BODY
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-3486,TB I MIL SPEC SINGLE MATERIAL RESPONSE BODY TB
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
75-B-YM-IIInterchangeable
interchangeable cross-reference
interchangeable
A-A-50431AInterchangeable
interchangeable cross-reference
interchangeable
AA50431-HFBZB00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILC3486?
MILC3486 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace MILC3486?
There are 11 known substitutes for MILC3486: MILC3486, AA50431, AA50431-OMBZE10 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILC3486?
MILC3486 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-5675. 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