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8231726-0001 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

8231726-0001: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thread_class: 2B ALL ENDS, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: PLAIN (TUBE) ALL ENDS, special_features: 0.250 IN.-2B UNF HOLE ON WALL IN, style_designator: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-423-6554, 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
8231726-0001
NSN: 4730-01-423-6554
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thread_class2B ALL ENDS
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_stylePLAIN (TUBE) ALL ENDS
special_features0.250 IN.-2B UNF HOLE ON WALL IN
style_designatorPLAIN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.562 INCHES ALL ENDS IN
nominal_overall_length1.380 INCHES IN
end_item_identification4920013890602
nominal_outside_diameter1.000 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
NSN4730-01-423-6554
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 8231726-0001 · 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
•
CONNECTION STYLE: PLAIN (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.380 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: PLAIN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.575 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.562 INCHES ALL ENDS IN
•
NOMINAL OUTSIDE DIAMETER: 1.000 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.380 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORPLAIN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.575 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER1.000 INCHES ALL ENDS IN
SPECIAL FEATURES0.250 IN.-2B UNF HOLE ON WALL IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B ALL ENDS
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
8231726Reference document
Same NSN cross-reference
Reference document — Drawing number 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 8231726-0001?
8231726-0001 is a COUPLING,TUBE.
What parts can replace 8231726-0001?
There is 1 known substitute for 8231726-0001: 8231726. Substitute compatibility should be verified for your specific system.
What is the NSN for 8231726-0001?
8231726-0001 is cataloged in the U.S. Government catalog under NSN 4730-01-423-6554. 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.