3.3mm 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 sizes3.3mm Drill Bit for Metal – Perfect for M4 Tapping HolesThe 3.3mm drill bit for metal is ideal for M4 threads. Superior strength and a 135° cobalt tip make it your go-to for stainless steel, alloy, and more.Designed for Tapping Prep and Fine Hole WorkNeed precision for an M4 tapped hole? The 3.3mm drill bit for metal is the ideal match. It’s widely used by machinists and engineers as the perfect pre-tap diameter. But its use doesn’t stop there—it’s great for creating strong, neat holes in thin or medium-gauge metal panels.Because it offers slightly more clearance than a 3mm bit, it’s favored for critical setups where exact sizing is essential. It’s also commonly used in electronics housings, robotics, and industrial maintenance.Cobalt Strength, Split Point PrecisionBuilt from M35 cobalt steel, this bit resists wear and remains sharp after repeated use. The 135° split point makes it easy to drill exactly where you need, even on hard metals. It cuts quickly and cleanly without wandering.This bit is perfect for:Tapping hole prep for M4 boltsStainless steel and heat-treated steelsAluminium, brass, and bronzeMild steel and construction-grade metalRigid plastics and laminatesOptimize Drilling with LubricationTo get cleaner holes and longer tool life, we recommend using TTP CUT-IT during drilling. The lubricant keeps temperatures low and ensures the drill moves freely through the metal.Find the Right Speed Every TimeAvoid ruining your bit with the wrong RPM. Our Speeds & Feeds Calculator helps you find the right speed for each job and metal type. With proper speed and feed, your bit stays sharper longer.Trusted Quality with a Money-Back PromiseThis 3.3mm drill bit for metal has earned its place in pro toolkits across America. Whether you're drilling stainless or prepping for tapping, you can trust its performance. Read the reviews.And with our money-back guarantee, there’s zero risk.
