Top 10 Best Drill Bits For Hardened Steel 2023- The Honest Review

Features :

• ✅【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resistance, high pressure resistance and sintering resistance.
• ✅【100 extra-long warranty period】：if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .
• ✅【M35 step drill compatibility 】： step drills can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill)
• ✅【M35 four spiral groove】: step drill four cutting blade design. Faster, smoother cutting and easier separation of sawdust.
• ✅【34 Sizes :Including】:1/8″-1/2″ 13 Sizes，1/4″-3/4″ 9 Sizes，3/16″ – 7/8″ 12 Sizes.
• ✅【M35 high speed steel with cobalt】: high hardness (HRC67-70) , high red hardness (625 ° C, 4H, HRC63-65) , wear resistance, toughness and bending strength are not lower than ordinary high speed steel, M35 high speed steel is characterized by general cutting with CO, quenching hardness is 1200-1240c.

Features :

• 29 PIECES INCLUDED: 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 11/64″, 3/16″, 13/64″, 7/32″, 15/64″, 1/4″, 17/64″, 9/32″, 19/64″, 5/16″, 21/64″, 11/32″, 23/64″, 3/8″, 25/64″, 13/32″, 27/64″, 7/16″, 29/64″, 15/32″, 31/64″, 1/2″.
• HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance.
• PRECISE 135°SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster.
• PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.
• ORGANIZED HOLDER: Set includes the drill bit holder with size index for easy storage and organizing.

Features :

• ★【Premium Bright Finish 2/Pack】 multi-purpose solid carbide drill bits provide better rigidity than high speed steel bits. It is extremely heat resistant and used for high speed applications. Our tungsten carbide (WC) bits has the advantage of cutting metal either “wet” or “dry” and they provide solutions for many businesses such as aerospace drilling jobs for aircraft mechanics, precision machining, hobby supply, etc.
• ★【Recommended For Use On】 aircraft metals chrome titanium inconel stainless steel Alloys Steel Low-Medium-High Carbon Steel Aluminum Copper Glass Plastics Composite Materials Cast Iron — Our Carbide drills stay sharp many times longer than traditional steel bits making them ideal for the toughest of applications!
• ★【Optimal Design for Metal Work】 118° four facet point angle minimizes drill wander and assures accurately sized holes. Our jobber length, precision ground carbide drills are designed for high feed rates with good chip disposal. smooth finish on the bits increases chip flow. Spiral flutes are constructed with a higher flute angle to remove chips more easily.
• ★【Specs】 Flute Length: 1-3/8 inch, Overall Length: 2-1/2 inch, Drill Size: 5/32 inch // Tungsten Carbide Grade (ISO): K20 // Binder: %8 Cobalt // Hardness: 91.3 HRa // Uncoated
• Tungsten carbide is a composite material, although it looks like a metal, it is a composite of Tungsten carbide powder mixed with cobalt as a binder metal, the resulting material is more like a ceramic than a metal. It is a very hard material being a 9 on the Mohs scale where diamond is a 10 and hard steel around 5. It will chew down into most anything but the hardness makes them brittle with virtually no plasticity. Unstable drilling can result in a broken bit. These drills like a a rigid dri

Features :

• 13 PACK OF 1/4″ COBALT DRILL BITS – 1/4″ Diameter with a Flute Length of 2-3/4″ and Total length of 4″
• M35, FULLY GROUND, 135° SPLIT POINT – Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.
• PLASTIC STORAGE CASE INCLUDED – Incredibly Tough and Durable Plastic Case. Perfect for Keeping Your Cobalt Drill Bits Neatly Organized and Safe.
• COBALT DRILL BITS ARE THE PERFECT DRILL BITS FOR METAL – As well as other hard materials such as Stainless Steel, Hardened Steel, Cast Iron, Bronze, Titanium, and More!
• LIFETIME GUARANTEE – Here at Owl Tools (USA Based Company) we only care about your satisfaction. We try our best to ensure each product is in perfect condition before you get it, but if something is not up to your satisfaction, please contact us for a full refund or replacement.

Features :

• 【Premium True 5% Cobalt Steel with 68 HRC】- The Marked Cobalt Content of Ordinary Drill Bits May be False, but This Drill Bits Set is Made of Cobalt Ore from Our Own Mine, Which Indeed Contains 5% Cobalt. Although the Cost and Price are Slightly Higher, It Usually is able to Provide 3X Heat,Wear and Chip Resistance and 3X Tool Life.
• 【Split Point Design and Fully Ground Process】- Compared with Other Ordinary Drill Bits, This Drill Bits Set is Particularly Suitable for Heavy Duty Work, Such as Cutting through Stainless Steel,Steel Plate,Iron Sheet, Cast Iron and Hardwood, and Drilling Out Bolts Studs and Screws.
• 【3X Efficiency + 3X Tool Life】- This Cobalt High Speed Steel Drill Bits Set is Typically Capable of Running 3 Times Faster. Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
• 【Sharp Drill Bit Edge】- This Kind of Drill Bits Beast Can Even Cut Hardened Metal into Long Iron Bars, While a Dull Drill Bit Can Just Slowly Wear Through Metal.
• 【13 Pieces Jobber Length Industrial Drill Bits Includes】:1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4 [DIA 1/64 Inch Increments]

Features :

• Size – 1/16“ 5/64″ 3/32″ 7/64″ 1/8″ 9/64″ 5/32″ 3/16″ 11/64″ 13/64″ 7/32″ 15/64″ 1/4″
• M42 Cobalt drill bit set for metal.Using unique process technology, each bit contains about 8% cobalt, which can easily handle common stainless steel materials and various medium hard metals
• Multi-blade tip-design,increase the pressure on the material when drilling, and it cuts faster and more smoothly than the general 135° drill.;thick web-helix design,fast cuts with smooth chip evacuation
• Applicable Materials – For Stainless Steel, Cast Iron, Titanium, Light Metals and Aluminum etc
• Applicable device – CNC machine, precision drilling machine, bench drill, medium and high power electric hand drill

Features :

• Packaging: 10 pcs Cobalt Drill Bit Set , Diameter 3/16″(Dia 4.76mm) , Flute Length 2-5/16″（58.74mm） , in a sturdy plastic case for easy storage and carrying.
• 3/16″ M35 Material Cobalt drill bits: 3/16″ drill bits for metal is made of Industry grade M35 High Speed Steel, containing 5% cobalt, which increases drill bit wear-resistance, durability and heat resistance.
• 135 Degree Tip Twist Design: precise positioning, lower pressure, fast penetration. Equipped with a straight shank to prevent walking, making drilling more precise and fast,clears particles quickly, decreases friction and heat.
• Feature：cobalt drill bit’s hardness is uniform so that can be repeatedly sharpened without damaging the cutting edge, suit for hard metals, stainless steel, cast iron, galvanized pipe, high temperature alloy, titanium alloy, woods and hard.
• Quality Commitment: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!

Features :

• Super Premium Solid Cobalt M42+ Steel
• 1/16″ to 1/2″ by 1/64th Increments (Does Not Skip any Sizes)
• 135 Degree Split Point Prevents “Walking”
• Tri-Flat Shank Prevents “Spinning” in the Drill Chuck
• Lifetime Warranty

Features :

• Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
• Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
• High-heat resistant bits – withstand high-temperature applications for extended periods of time
• Thick web-helix design – provides additional stability in tough applications
• Surface-hardened tip – penetrates tough abrasive materials
• Includes – 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16″, 3/8″, 1/2″

Features :

• REPLACES 28 DRILL BITS: This set includes three standard SAE step drill bits that replace 28 individual drill bits allowing for you to spend more time working, than swapping out drill bits.
• TITANIUM COATED HSS UNIBIT: Made of high-speed steel with titanium coating for added durability and bit life. Suitable to drill though plastic, aluminum, copper, stainless steel, and many other types of sheet metal.
• SMOOTH DRILLING ACTION: Two-flute spiral design provides faster, smoother cutting without walking and a tri-flat shank to ensure a firm grip. Our titanium 2 step bits for metal are perfect for all your DIY, general building, and engineering tasks.
• COMPLETE STEP DRILL BIT SET: Comes with one 3/16-inch to 1/2-inch six-step bit, 1/4-inch to 3/4-inch nine-step bit, and 1/8-inch to 1/2-inch 13-step bit
• STEP BIT SET CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill. Our unibit step drill bit is compatible with most drills on the market.