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6N505 — NUT,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6N505: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 1.188 INCHES NOMINAL IN, thread_series: UNS, nominal_thread_size: 2.312 INCHES IN, thread_quantity_per_inch: 12. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-200-8508, 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
6N505
NSN: 4730-01-200-8508
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 54716 — HYDRASEARCH CO., INC. DBA USE CAGE CODE 32142 FOR CATALOGING (USA)
SPECIFICATIONS
nut_styleHEXAGON
nut_height1.188 INCHES NOMINAL IN
thread_seriesUNS
nominal_thread_size2.312 INCHES IN
thread_quantity_per_inch12
NSN4730-01-200-8508
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6N505 · 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
•
THREAD SERIES: UNS
•
NOMINAL THREAD SIZE: 2.312 INCHES IN
•
NUT HEIGHT: 1.188 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 12
TECHNICAL CHARACTERISTICS
THREAD SERIESUNS
NOMINAL THREAD SIZE2.312 INCHES IN
NUT HEIGHT1.188 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH12
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 2
6N505-MNReference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL0675021Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 6N505?
6N505 is a NUT,UNION.
What parts can replace 6N505?
There are 2 known substitutes for 6N505: 6N505-MN, 4730PL0675021. Substitute compatibility should be verified for your specific system.
What is the NSN for 6N505?
6N505 is cataloged in the U.S. Government catalog under NSN 4730-01-200-8508. 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.