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MCD4124ITEM3-8-12-15-17 — Technical Data Sheet

✓ 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, leg_length: 4.000 INCHES MINIMUM IN, overall_length: 6.750 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS, furnished_items: GASKET, connection_style: BARBED OR SERRATED END ALL ENDS. This part is cataloged in the Federal Logistics Information System under NSN 4730-00-649-7389, 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
MCD4124ITEM3-8-12-15-17
NSN: 4730-00-649-7389
FSC: 4730
CAGE: 87990 — QUARTERMASTER GENERAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length4.000 INCHES MINIMUM IN
overall_length6.750 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
furnished_itemsGASKET
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
quick_disconnect_methodCAM-LOCKING ALL ENDS
quick_disconnect_nominal_size4.734 INCHES ALL ENDS IN
nominal_inside_diameter_hose_accommodated4.000 INCHES ALL ENDS IN
NSN4730-00-649-7389
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MCD4124ITEM3-8-12-15-17 · 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
•
SURFACE TREATMENT: ANODIZE BODY
•
FURNISHED ITEMS: GASKET
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 4.000 INCHES ALL ENDS IN
•
MATERIAL: ALUMINUM ALLOY BODY
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
•
LEG LENGTH: 4.000 INCHES MINIMUM IN
•
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
•
QUICK DISCONNECT NOMINAL SIZE: 4.734 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENTANODIZE BODY
FURNISHED ITEMSGASKET
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED4.000 INCHES ALL ENDS IN
MATERIALALUMINUM ALLOY BODY
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
LEG LENGTH4.000 INCHES MINIMUM IN
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
QUICK DISCONNECT NOMINAL SIZE4.734 INCHES ALL ENDS IN
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
2781-4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
RH19B25InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
16028P11InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A-A-59326/6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A-A-59326InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MCD4124ITEM3-8-12-15-17?
MCD4124ITEM3-8-12-15-17 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace MCD4124ITEM3-8-12-15-17?
There are 29 known substitutes for MCD4124ITEM3-8-12-15-17: 2781-4, RH19B25, 16028P11 and 26 more. Substitute compatibility should be verified for your specific system.
Is MCD4124ITEM3-8-12-15-17 still available?
MCD4124ITEM3-8-12-15-17 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026