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59T-1 — THREAD PIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

59T-1: THREAD PIECE,UNION.

The THREAD PIECE,UNION is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-126-1724, 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
59T-1
NSN: 4730-01-126-1724
NIINs: 011261724, 016336963
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 99565 — ADMIRAL VALVE LLC DBA CPV MANUFACTURING (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
NSN4730-01-126-1724
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 59T-1 · 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
•
UNION END THREAD DIRECTION: RIGHT-HAND
•
NOMINAL PIPE SIZE DESIGNATION: 0.250 INCHES IN
•
END CONNECTION TYPE: THREADED
•
UNION END THREAD SIZE: 1.188-12
•
SEAT TYPE: STRAIGHT FACE
•
THREAD DIRECTION: RIGHT-HAND
•
TUBING OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNION END THREAD DIRECTIONRIGHT-HAND
NOMINAL PIPE SIZE DESIGNATION0.250 INCHES IN
END CONNECTION TYPETHREADED
UNION END THREAD SIZE1.188-12
OVERALL LENGTH1.562 INCHES NOMINAL IN
SEAT TYPESTRAIGHT FACE
THREAD DIRECTIONRIGHT-HAND
TUBING OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
THREAD SIZE0.562-18
SCREW THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 3
MD59-1-6-BWSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
59T-1-SReference document
Same NSN cross-reference
Reference document — Secondary reference
MD59-1-6Reference 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 59T-1?
59T-1 is a THREAD PIECE,UNION.
What parts can replace 59T-1?
There are 3 known substitutes for 59T-1: MD59-1-6-BW, 59T-1-S, MD59-1-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 59T-1?
59T-1 is cataloged in the U.S. Government catalog under NSN 4730-01-126-1724. 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.