RMT NAS Grade HSS-Co Cobalt Jobber Drill Bit 135°.Imperial Cobalt Jobber Drill Bit manufactured from NAS (National Aerospace Standard) Cobalt Steel. The JC514 series have superior ‘red’ hardness for high temperature applications. The perfect drill for letting the machine do the work, with increased speeds and less load pressure required. Cobalt Jobber drill bits feature a 135° split point which self-centers and penetrates the material surface on contact preventing drill wondering. Drill flutes on RMT drill bits are precision ground using the latest CNC technology for faster and more efficient swarf and chip removal. Ground precisely to tight quality standards, the flutes deliver superior cutting performance and precision.
Material ApplicationSteel (low and medium carbon), Alloy Steel, Stainless Steel and Strength Alloys
SizesImperial diameters; including fractional drill sizes from 1/16” (.0625) to ½” (.5000), wire drill sizes from #1 (.2280) to #60 (.0400) and letter drill sizes from A (.2340) to Z (.4130).