3.5mm 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 sizes3.5mm Drill Bit for Metal – Precision Hole-Making for M4 ClearanceThe 3.5mm drill bit for metal is great for M4 clearance holes. Durable cobalt steel and a split point give fast, accurate results in any metal.Extra Clearance for M4 BoltsThe 3.5mm drill bit for metal is the go-to size when an M4 bolt needs just a bit more clearance. It’s often used in fabrication, HVAC installations, and control panels where fasteners need smooth fitment. This size helps avoid binding and ensures bolts pass cleanly through multiple layers.Moreover, its slightly larger profile gives added flexibility without compromising strength or control. It’s perfect for through-holes or non-threaded fastener mounting.Built for Strength and ConsistencyMade from M35 cobalt, this bit handles heat better than standard high-speed steel. The 135° split point makes for clean entries without skidding. Even when you’re drilling angled surfaces or curved pipes, it starts clean and stays straight.This 3.5mm cobalt drill bit can cut through:Stainless steel, including 304 and 316Cast iron, copper, and brassMild and hardened steelsStructural alloy panelsFiberglass and rigid plasticUse Cutting Paste for Smooth ResultsTo protect your drill bit and improve cut quality, use TTP CUT-IT metal cutting paste. The lubricant reduces friction and extends tool life, especially useful when working on stainless or hardened steels.Dial In the Right RPMNot sure how fast to spin your drill? Visit our Speeds & Feeds Calculator and enter your material and bit size. This free tool gives accurate speed and feed settings in seconds.TTP HARD Delivers Quality, GuaranteedWhether you're working in a garage, shop, or out on site, the 3.5mm drill bit for metal gets the job done right. It’s trusted by tradesmen, engineers, and serious DIYers across the USA (read what they say).With our no-risk money-back guarantee, you can buy with total confidence.
