5 /16 Carbide Drill Bit: Max 700 Holes for Hardened Steel Stainless Steel Hot Working Steel Metal CNC Tungsten Solid Carbide TiAlSi Coating Jobber Drill Bits 135 Point Angle

Features

• The Enhanced Tip for Demanding Materials135 point angle is standard for carbide drills bit machining stainless steel, hot working steel HRC40 and other high hardness steels. This obtuse geometry strengthens the cutting tip, reduces cutting forces, and minimizes carbide drill bit "slioping or walkino" for improved accuracy and drill life
• Tialsi Coating For Stainless & Hard SteelsTiAlSi coating represents a significant advancement over conventional AlTiN. It features a substantially higher coating hardness of 3,200 HV compared to AlTiN's 2,600 HV, and an elevated oxidation resistance of 1,300C. This combination, along with its high coefficient of friction, is engineered to withstand the extreme heat and abrasion encountered when drilling stainless steels and high-hardness steel materials
• YFTOOL 5/16 Carbide Drill Bit Set | Precision For Delicate Workthis solid carbide drill bit includes, 5/16" engineered for fine and precise drilling. the premium carbide construction ensures exceptional rigidity, guaranteeing tight tolerances within 0.003mm for demanding applications
• Optimized Chip Control & Heat Reductionthe strong pumping effect created by the 30 helix angle can quickly expel long and tough chips out of the hole. this feature, combined with the short chips formed by the 135 point angle, fundamentally solves the problem of chip blockage. smooth chip evacuation removes a large amount of cutting heat, effectively controlling the workpiece temperature, and significantly reducing the work hardening phenomenon common on materials such as stainless steel and hard steel
• 0.4m K30 Carbidethe foundation of this carbide drill is a k30 grade carbide with an ultra-fine 0.4-micron grain structure. this delivers two key benefits: extreme wear resistance for a longer tool life and superior strength/rigidity to prevent deflection and breakage, ensuring consistent precision in every cut