4.2mm cobalt M35 metal drill bitsDrill stainless steel and harder metals easily:Heavy Duty Cobalt Drill BitsSuitable for drilling harder metals including stainless steelUsed by professionals and home improvement enthusiastsCan be resharpenedRockwell hardness C average of 66 certificationMoney Back GuaranteeClick here for Imperial drill bit sizesClick here for Metric drill bit sizes4.2mm Drill Bit for Metal – The Precision Bit for Technical JobsTackle stainless steel, cast iron, and more with our 4.2mm drill bit for metal. Made from M35 cobalt with a 135° split point for pinpoint accuracy.Ideal for Specialist ProjectsThe 4.2mm drill bit for metal is often used in tasks where precision and strength matter. From fabricating brackets to fitting electrical components, this bit shines when working with tight tolerances. Thanks to its M35 cobalt steel makeup, it stays sharp and resists heat, making it ideal for repetitive work on harder metals.Cut Through Tough Metals with EaseThe bit features a 135° split point, which means it starts drilling right where you need it—no wandering or slipping. That makes it great for tasks on stainless steel and high-tensile materials. It’s also effective for:Cast iron and tool steelsMild and hardened steelNon-ferrous metals like brass and bronzeAluminum and compositesTo maintain peak performance, use TTP CUT-IT metal cutting paste—essential for longer bit life and cooler drilling temperatures.Dial In for Best ResultsMaximize the life of your drill bits by using our Speeds & Feeds Calculator. It’s free and helps you determine the ideal RPM and feed rate based on material and drill size.Trusted, Tested, and GuaranteedWe supply metalworkers across the USA with bits they trust. Our 4.2mm drill bit has received outstanding feedback for both reliability and performance. Read verified opinions in our Customer Reviews PDF.Plus, we back all our drill bits with a full money-back guarantee. If it’s not right for your job, we’ll make it right.SummaryThe 4.2mm drill bit for metal is a high-performance solution for precise, demanding drilling. Made from M35 cobalt and sharpened to a 135° split point, it’s built to power through the toughest materials—without fail.
