.040 drill bitsize

Our Threaded Shank Adapter Drills are manufactured to NAS 965 Type D Standards with 135 Degree Split Points.  Cobalt Drills are for drilling hard, tough, high tensile strength materials and has a significantly longer tool life than regular High Speed Steel.  Industry standard 1/4 - 28 threads. 2-1/8" Long.  Our Threaded Shank Drills are Made in the USA! 11098          #40 Long Cobalt Threaded Drill Bit

.040 drill bitharbor freight

440C resists corrosion in a typical domestic environment and very mild industrial environments. After heat treatment, it attains the best strength, hardness, and wear resistance relative to all the other stainless-steel alloys.

Stainless steel 440C is a martensitic stainless alloy with 18% chromium 1.20% carbon. The 'C' suffix stands for 'carbon' since it is the stainless-steel alloy with the highest carbon content in the 400 series. The high carbon content yields very high strength at the expense of poor machinability, around 35%.

Brown Aviation Tool Supply, LLC 2536 SE 15th Street Oklahoma City, OK 73129 Toll Free 800-587-3883 (US & Canada) Local 405-688-6888