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44555K121 — CONNECTOR,HOSE,BULKHEAD

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

44555K121: CONNECTOR,HOSE,BULKHEAD.

The CONNECTOR,HOSE,BULKHEAD is a the manufacturer industrial component. Key specifications include special_features: MATERIAL: BRASS;HOLE SIZE 3/8", end_item_identification: NSN: 2350-01-509-3953; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS), part_name_assigned_by_controlling_agency: PANEL MOUNT COUPLING. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-550-7872, 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
44555K121
NSN: 4730-01-550-7872
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
special_featuresMATERIAL: BRASS;HOLE SIZE 3/8"
end_item_identificationNSN: 2350-01-509-3953; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
part_name_assigned_by_controlling_agencyPANEL MOUNT COUPLING
NSN4730-01-550-7872
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 44555K121 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESMATERIAL: BRASS;HOLE SIZE 3/8"
PART NAME ASSIGNED BY CONTROLLING AGENCYPANEL MOUNT COUPLING
END ITEM IDENTIFICATIONNSN: 2350-01-509-3953; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
SUBSTITUTES & CROSS-REFERENCES 1
10-52901Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 44555K121?
44555K121 is a CONNECTOR,HOSE,BULKHEAD.
What parts can replace 44555K121?
There is 1 known substitute for 44555K121: 10-52901. Substitute compatibility should be verified for your specific system.
What is the NSN for 44555K121?
44555K121 is cataloged in the U.S. Government catalog under NSN 4730-01-550-7872. 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.