NAS Grade Cobalt HSSCo Aircraft Extension Drill Bits 135°.
RMT NAS Grade Cobalt HSSCo Aircraft Extension Drill Bits 135°. Industrial-Grade NAS (National Aerospace Standard) Cobalt Steel Extended Length Drill Bits. Aircraft Extension drill bits feature the same flute length as standard jobber drill bits, but for an extended shank making all diameters 6” overall length. Precision flute ground for superior strength and run-out characteristics, 6C514 Extended Cobalt drill bits are a mid-length extension solution for deep holes in confined applications, where a longer reach is required.
Rocky Mountains cobalt series of drills offer superior red hardness for high temperature applications. Drill flutes on all 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 of these cobalt drills deliver superior cutting performance and accuracy. Like all RMT drill bits, these cobalt jobber length flute with extended reach drill bits are manufactured from one piece of industrial grade NAS (National Aerospace Standard) cobalt steel. Aircraft extension drills ensure there is no need for a separate extension tool which could cause FOD in aerospace applications.
Material Application Cast Iron and Alloy Steel
Sizes Imperial 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))