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Technical Data Sheet
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1644366 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1644366: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: 1-14 ORSM X 1-14 ORSM X 1-14 ORSM TEE, end_item_identification: 2320-01-522-1859 TRUCK,DUMP,10 TON,FMTV,W/WINCH, part_name_assigned_by_controlling_agency: ADAPTER 1 ORSM TEE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-570-9397, 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
1644366
NSN: 4730-01-570-9397
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_features1-14 ORSM X 1-14 ORSM X 1-14 ORSM TEE
end_item_identification2320-01-522-1859 TRUCK,DUMP,10 TON,FMTV,W/WINCH
part_name_assigned_by_controlling_agencyADAPTER 1 ORSM TEE
NSN4730-01-570-9397
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1644366 · 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
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES1-14 ORSM X 1-14 ORSM X 1-14 ORSM TEE
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER 1 ORSM TEE
END ITEM IDENTIFICATION2320-01-522-1859 TRUCK,DUMP,10 TON,FMTV,W/WINCH
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
406444Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 1644366?
1644366 is a TEE,TUBE.
What parts can replace 1644366?
There is 1 known substitute for 1644366: 406444. Substitute compatibility should be verified for your specific system.
What is the NSN for 1644366?
1644366 is cataloged in the U.S. Government catalog under NSN 4730-01-570-9397. 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.