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MS33656E12 — COUPLING HALF,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS33656E12: COUPLING HALF,SELF-SEALING.

The COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, nominal_thread_size: 0.3125 INCHES ALL ENDS IN, end_item_identification: L.L.A.D. VEHICLE VENTILATION SYSTEM, thread_quantity_per_inch: 24 ALL ENDS, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-418-2160, 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
MS33656E12
NSN: 4730-01-418-2160
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
nominal_thread_size0.3125 INCHES ALL ENDS IN
end_item_identificationL.L.A.D. VEHICLE VENTILATION SYSTEM
thread_quantity_per_inch24 ALL ENDS
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
NSN4730-01-418-2160
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS33656E12 · 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: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
NOMINAL THREAD SIZE: 0.3125 INCHES ALL ENDS IN
•
THREAD CLASS: 2A ALL ENDS A
•
THREAD QUANTITY PER INCH: 24 ALL ENDS
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
NOMINAL THREAD SIZE0.3125 INCHES ALL ENDS IN
THREAD CLASS2A ALL ENDS A
END ITEM IDENTIFICATIONL.L.A.D. VEHICLE VENTILATION SYSTEM
THREAD QUANTITY PER INCH24 ALL ENDS
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
AS4395E2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS33656E12?
MS33656E12 is a COUPLING HALF,SELF-SEALING.
What parts can replace MS33656E12?
There is 1 known substitute for MS33656E12: AS4395E2. Substitute compatibility should be verified for your specific system.
What is the NSN for MS33656E12?
MS33656E12 is cataloged in the U.S. Government catalog under NSN 4730-01-418-2160. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.