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 sizes3mm Drill Bit for Metal – Compact Size, Maximum AccuracyTackle tight-space drilling in stainless, steel, or alloy with the 3mm drill bit for metal. Cobalt steel and 135° point ensure fast, accurate results.Built for Precision in Tight ApplicationsThe 3mm drill bit for metal is ideal when accuracy and control matter most. Frequently used for pilot holes, electronics casings, and small-scale fabrication, this bit works well in delicate applications where a standard bit would struggle. Its slim profile allows you to drill in tight areas without sacrificing strength or stability.In auto repair, it's often used for marking out weld points. In engineering, it's popular for tapping preparation in M4 threads. And in DIY metalwork, it’s the go-to size for starting accurate holes before moving up to larger diameters.Reliable Performance in Tough MetalsThis bit is made from M35 cobalt steel, giving it superior heat resistance and edge retention. The 135° split point cuts through metal cleanly and helps eliminate walking, making it easier to start holes precisely—no pilot needed.Use the 3mm cobalt drill bit to bore through:Stainless steel (including grades 304 and 316)Mild steel and hardened metalsCast iron, bronze, and copperAluminium and alloy sheetRigid plasticsEven when drilling dozens of holes, the bit maintains its shape and sharpness.Boost Performance with the Right LubricantTo maximize efficiency and extend bit life, pair this drill with TTP CUT-IT metal cutting paste. The paste reduces friction, minimizes heat, and produces smoother cuts. You’ll also avoid common problems like binding, overheating, or bit breakage.Accurate Speeds for a Cleaner FinishSpeed matters. Running too fast will damage the bit; going too slow wastes time. Use our Speeds & Feeds Calculator to get the right drill RPMs for your material. This small step saves wear on your bit and improves results with every hole.Professional-Grade Performance, GuaranteedFrom HVAC engineers to custom fabricators, customers across the USA rely on this 3mm drill bit for metal. It performs in the shop and in the field. If you’re not 100% satisfied, we’ll refund your purchase—no questions asked. Read our customer reviews.With TTP HARD cobalt bits, you get results you can count on. Every time.
