Carbide Upper Knife – Part #50143403 - Sergers
Upper Serger Knife – Part #50143403
This genuine upper knife (blade) is used in many household and mid-range overlock (serger) machines. Its robust steel blade ensures clean fabric cutting and smooth operation.
Compatible Models
MO-613 · MO-623 · MO-634 · MO-634DE · MO-644D · MO-654DE · MO-655 · MO-655DE · MO-734DE · MO-735 003 · 003D · 004 · 004D · 006D · 007D · 008D · 009D · 009DC · 009DCC · 1100D · 1100DA · 1150MDA · 1200DA · 1200MDA · 1300DC · 1300MDC · 2000DE · 2500DCE · 700D · 800D · 800DLUsage Notes
-
Typically paired with a lower knife (Part #50145403) in overlock machines
-
Ideal for cleanly trimming fabric edges during seam finishing
-
Fits machines with compatible bolt and blade dimensions
Ensure your serger model matches one listed above to guarantee a proper fit.