PATIKIL 7.9mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel - 1 Pack

PACKING LIST: 1 pack of drill bit in 7.9mm(0.31 inch ≈ 5/16 inch) cutting diameter, 65mm/2.56 inch flute length, 117mm/4.61 inch overall length, 135-degree split point FEATURE: M42 high-speed steel is formulated with a high 8% cobalt, high hardness and wear resistance, especially suitable for processing hard materials, excellent heat resistance, suitable for high-speed cutting. The titanium nitride (tin) coated can prevent further oxidation or corrosion of the drill bits and extend the service life. APPLICATION: The M42 material drill bit has a high 8% cobalt content, mainly used in demanding professional drilling operations, making it suitable for processing medium-high hard metals. It is suitable for drilling various materials, including stainless steel, iron, aluminum, copper, plastics, and wood. NOTE: High cobalt HSS typically has a higher number of drilling times than M2 HSS and M35 HSS under the same conditions, potentially thousands or more. This significantly increases machining efficiency and reduces costs, especially when machining difficult materials. INSTRUCTION: The twist drill should be at a 90° angle to the workpiece. When drilling different materials, the drilling speed needs to be adjusted. The harder the material, the lower the drilling speed should be. Adjusting the speed can improve cutting efficiency, extend tool life, and reduce material damage. M42 8% Cobalt high-speed steel is formulated with a high cobalt and molybdenum-vanadium alloy, offering superior toughness, hardness, and wear resistance. It optimally balances high-temperature hardness, wear resistance, and durability.

Titanium Nitride (TiN) Coated: Enhances twist drill performance by increasing hardness, reducing friction, improving oxidation resistance, and preventing material adhesion. This coating significantly improves drill bits' lifespan, machining efficiency
135-degree split point tip design:
The drill bit's 135-degree angle enhances stability and precision when drilling hard materials. This design improves heat dissipation and tool durability, making it suitable for hardened steel, cast iron, and other tough alloys.

√APPLICATION
The M42 HSS titanium coated twist drill is engineered for high-hardness, high-viscosity, and high-temperature materials due to its exceptional red hardness, wear resistance, and anti-adhesion properties. It is suitable for drilling: High-temperature alloys, Titanium alloys, Stainless steel, Hardened steel, Cast iron, Hard plastics, and Wood

√PACKING LIST:
-Flute Diameter: 7.9mm/0.31 inch ≈ 5/16inch
-Shank Diameter: 7.9mm
-Flute Length: 65mm/2.56 inch
-Total Length: 117mm/4.61 inch
-Package Content: 1pcs x Drill Bit

√NOTE:
During the machining process, friction between the drill bit and the material generates significant heat. Using coolant effectively reduces the temperature, preventing tool overheating and extending the lifespan of the drill bits.