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50635K439 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

50635K439: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include special_features: MATERIAL IS BRASS, nominal_thread_size: 0.625 INCHES FIRST END IN, coupling_flange_shape: HEXAGON, nominal_overall_length: 1.36 INCHES IN, end_item_identification: 11B5091259, part_name_assigned_by_controlling_agency: COUPLING,TUBE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-726-1316, 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
50635K439
NSN: 4730-01-726-1316
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
special_featuresMATERIAL IS BRASS
nominal_thread_size0.625 INCHES FIRST END IN
coupling_flange_shapeHEXAGON
nominal_overall_length1.36 INCHES IN
end_item_identification11B5091259
part_name_assigned_by_controlling_agencyCOUPLING,TUBE
NSN4730-01-726-1316
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 50635K439 · 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
•
COUPLING FLANGE SHAPE: HEXAGON
•
NOMINAL OVERALL LENGTH: 1.36 INCHES IN
•
NOMINAL THREAD SIZE: 0.625 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
COUPLING FLANGE SHAPEHEXAGON
NOMINAL OVERALL LENGTH1.36 INCHES IN
NOMINAL THREAD SIZE0.625 INCHES FIRST END IN
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
SPECIAL FEATURESMATERIAL IS BRASS
PART NAME ASSIGNED BY CONTROLLING AGENCYCOUPLING,TUBE
END ITEM IDENTIFICATION11B5091259
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
11B5091705Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 50635K439?
50635K439 is a COUPLING,TUBE.
What parts can replace 50635K439?
There is 1 known substitute for 50635K439: 11B5091705. Substitute compatibility should be verified for your specific system.
What is the NSN for 50635K439?
50635K439 is cataloged in the U.S. Government catalog under NSN 4730-01-726-1316. 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.