PartsTable
Technical Data Sheet
Download PDF

1655867PC26 — NUT,TUBE COUPLING,REDUCING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1655867PC26: NUT,TUBE COUPLING,REDUCING.

The NUT,TUBE COUPLING,REDUCING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1118 OVERALL, nut_style: TUBE COUPLING, nut_height: 1.125 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-650-2178, 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
1655867PC26
NSN: 4730-00-650-2178
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1118 OVERALL
nut_styleTUBE COUPLING
nut_height1.125 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
fabrication_methodMACHINED
length_to_shoulder0.937 INCHES NOMINAL IN
width_across_flats1.250 INCHES NOMINAL IN
nominal_thread_size1.125 INCHES IN
smallest_inside_diameter0.257 INCHES NOMINAL IN
NSN4730-00-650-2178
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1655867PC26 · 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: 0.937 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.250 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.125 INCHES IN
•
NUT HEIGHT: 1.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.937 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.250 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.125 INCHES IN
NUT HEIGHT1.125 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
NUT STYLETUBE COUPLING
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy 1655867PC26?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1655867PC26?
1655867PC26 is a NUT,TUBE COUPLING,REDUCING.
What is the NSN for 1655867PC26?
1655867PC26 is cataloged in the U.S. Government catalog under NSN 4730-00-650-2178. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1655867PC26

✓ 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.