Size - cutting edge diameter: 11.8mm / 0.465' cutting edge length: 75mm / 2.95' shank diameter: 11.8mm / 0.465' overall length: 142mm / 5. the larger the drilling size, the slower the speed requirement. please pay attention to the speed adjustment when using the electric drill. Notes - choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. chamfered shank design for easier clamping and less slippage during use. the spiral groove facilitates the export of metal chips, saving time and effort in operation. Size - cutting edge diameter: 10.8mm / 0.425' cutting edge length: 75mm / 2.95' shank diameter: 10.8mm / 0.425' overall length: 142mm / 5.59' cutting point angle: 135 degree manufacturing technology: fully-groundįeatures - sharp cutting edge provides fast, neat and smooth cuts. do not drill quenched and tempered materials. nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant.Īpplications - the straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Material - m42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness. despite the higher price, the cost per hole is minimal when using a cobalt bit as it can produce more holes. Precise and efficient drilling performance - this twist drill bit is typically capable of running at three to five times the speed. it increases the life of the drill bit and reduces wear. Need for cooling in use - adding cutting fluid to the drilling process greatly reduces the problem of overheating and melting of the drill bit. However, the M7 drill bit has a lower melting point and can be easily damaged by high temperatures. highly hard and wear resistant, cobalt drill bits containing 8% cobalt hss provide 10 times longer is particularly suitable for stainless steel drilling. One of the first questions that you may be asking is, What is the difference between M7 molybdenum drill bits and M42 cobalt drill bits The M7 bit is made of 92 Hi-Molybdenum and is stronger than the M42 drill bit, which contains 8 Cobalt. M42 8% cobalt hss - premium m42 8% cobalt steel, 68-70 hrc. Suitable for all kinds of metal drilling - metric drill bit sets are widely used for drilling holes in stainless steel, iron, copper, zinc and other metals.tiles, concrete, walls, stone, etc. hardened tip can penetrates tough abrasive materials.industrial titanium coating, higher grade,higher hardness and more durable than ordinary drill bits. Wayne Winton of Tri-County Locksmiths wrote an excellent piece for Safe & Vault Technology entitled ‘ The Ultimate Guide to Drill Bits ‘ in which he highlights the capabilities of different types of metal drill bits.Industrial titanium coating surface - it can reduce the red heat of the bit and increase the drilling speed of the bit. Read testimonials from TTP HARD cobalt drill bit customers to see what they have drilled. Wheather you are drilling with a hand drill or a pedestal drillįor the majority of individuals cobalt drill bits will drill through most metals they will need to drill including stainless steel, hardened steel and high tensile bolts. Irwin Tools IRWIN Drill Bit Set with TurboMax Bits & Case, 29-Piece (3018006B) - Jobber Drill Bits.Your choice of drill bit therefore may not purely be decided on based on the type of metal you wish to drill but also They vary not only in what they can drill but can also vary greatly in price, hardness and suitability for either use in a hand drill or a pedestal drill. These include HSS, Titanium, Carbide, Cobalt and Tungston. Metric drill bit range dimensions size chartĪ) There are many types of drill bits available for drilling different metal types.

Imperial drill bit range dimensions size chart See complete drill bit dimensions size charts here :

They instaed have 118 degree point, this is due to the difficulty of creating a 135 degree point on such a small diameter drill bit. * Only the 4 smallest diameter drill bits do not have 135 degree split point. The 135 deg split point also greatly reduces the chance of the drill bit ‘walking’ or sliding. The majority * of TTP HARD drill bits have a 135 deg split point which means they will start drilling/cutting immediately. The remaining 95% is made up of a mixture of other metals including molybdenum which greatly increases the drill bits ability to withstand higher temperatures.īecause TTP HARD drills have 5% cobalt throughout the drill bit (not coated) it can be resharpened. This will allow the drills to drill the majority of hard metals including stainless steel. This means that they contain approximately 5% cobalt. A) TTP HARD cobalt drill bits are M35 cobalt drill bits.

Irwin cobalt drill bits m42