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225875 — NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

225875: NUT,TUBE COUPLING.

The NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, nut_style: TUBE COUPLING, nut_height: 1.200 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, special_features: DRILLED FOR LOCK WIRE,2 HOLES,0.070 IN. DIA THRU IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-00-545-0066, 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
225875
NSN: 4730-00-545-0066
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
nut_styleTUBE COUPLING
nut_height1.200 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
special_featuresDRILLED FOR LOCK WIRE,2 HOLES,0.070 IN. DIA THRU IN
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
fabrication_methodMACHINED
length_to_shoulder1.000 INCHES NOMINAL IN
width_across_flats1.370 INCHES NOMINAL IN
nominal_thread_size1.187 INCHES IN
NSN4730-00-545-0066
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 225875 · 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
•
LENGTH TO SHOULDER: 1.000 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.370 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.187 INCHES IN
•
NUT HEIGHT: 1.200 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER1.000 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.370 INCHES NOMINAL IN
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.187 INCHES IN
NUT HEIGHT1.200 INCHES NOMINAL IN
SPECIAL FEATURESDRILLED FOR LOCK WIRE,2 HOLES,0.070 IN. DIA THRU IN
SURFACE TREATMENTANODIZE OVERALL
NUT STYLETUBE COUPLING
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

No substitute or cross-reference records for this part.

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 225875?
225875 is a NUT,TUBE COUPLING.
What is the NSN for 225875?
225875 is cataloged in the U.S. Government catalog under NSN 4730-00-545-0066. 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.