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Cobalt Drill Bits

cobalt drill bits
Digging into the quarter-inch thick hardened steel.?

I went through 3 drill bits cobalt try a piece quarter-inch thick we suppose it's steel. The reason I believe it is steel, because I know you've been exposed to at least one year without any rust or fade and is very heavy (with the exception of titanium). The steel strip thickness is ¼ x 1 ½ wide. Any suggestions about speed, bit type, lubrication, etc. is greatly appreciated!

Cobalt bits are the best. Drill small pilot holes and cool your bitte spray antifreeze on it.

Cobalt Drill Bits

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10 PCS 1/16 Fractional Cobalt Jobber Drill Bits,135 DEG, NAS 907


10 PCS 1/16 Fractional Cobalt Jobber Drill Bits,135 DEG, NAS 907


$13,225.00


680 Drill Bits PTD Precision Twist Drill Cobalt Drill Bits. Nice Large Lot !


680 Drill Bits PTD Precision Twist Drill Cobalt Drill Bits. Nice Large Lot !


$2,000.00


Drillco 1000C Series 32 Piece Cobalt Steel Reduced Shank Drill Bit Set, Black


Drillco 1000C Series 32 Piece Cobalt Steel Reduced Shank Drill Bit Set, Black


$1,846.99


Drillco 500 Series 115 Piece Cobalt Steel Heavy-Duty Jobber Drill Bit Set,...


Drillco 500 Series 115 Piece Cobalt Steel Heavy-Duty Jobber Drill Bit Set,…


$1,276.92


Chicago-Latrobe Jobber Drill Bit Set, Cobalt Steel, Fractional Inch, Letter,


Chicago-Latrobe Jobber Drill Bit Set, Cobalt Steel, Fractional Inch, Letter,


$1,150.75


8 PC IND COBALT SILVER & DEMING DRILL BIT HSS  3/4


8 PC IND COBALT SILVER & DEMING DRILL BIT HSS 3/4″, 13/16″, 7/8″, 15/16″,1″


$943.95


Irwin 3018002B 8x 29 Piece Drill Bit Industrial Set-Cobalt M42 New


Irwin 3018002B 8x 29 Piece Drill Bit Industrial Set-Cobalt M42 New


$925.00


HANSON 63194 - Drill Bit, Cabinet, Cobalt, 192pc


HANSON 63194 – Drill Bit, Cabinet, Cobalt, 192pc


$897.00


Precision Twist 115pc Cobalt Drill Set 1/16-1/2 x 64 Ths 1-60 A-Z Drills Jobber


Precision Twist 115pc Cobalt Drill Set 1/16-1/2 x 64 Ths 1-60 A-Z Drills Jobber


$882.34


Cobalt Finish 115-Pack 135 deg Spplit Point Tip Round Shank Twist Drill Bit Set


Cobalt Finish 115-Pack 135 deg Spplit Point Tip Round Shank Twist Drill Bit Set


$875.70


Chicago-Latrobe Jobber Drill Bit Set, Cobalt Steel, Fractional Inch, 29, TiN


Chicago-Latrobe Jobber Drill Bit Set, Cobalt Steel, Fractional Inch, 29, TiN


$852.68


KEO 55557-TiN Countersink, 6 FL, 90 Deg, 3 In, Cobalt, TiN


KEO 55557-TiN Countersink, 6 FL, 90 Deg, 3 In, Cobalt, TiN


$831.00


Drillco 500 Series 115 Piece Cobalt Steel Heavy-Duty Jobber Drill Bit Set, Bronz


Drillco 500 Series 115 Piece Cobalt Steel Heavy-Duty Jobber Drill Bit Set, Bronz


$724.98


 c26173 6 piece m42 cobalt heavy duty short length nc spotting drill bit set,


c26173 6 piece m42 cobalt heavy duty short length nc spotting drill bit set,


$722.82


Dri o 500 115pc Cobalt Steel Heavy-Duty Jobber Drill Bit Set Bronze Finish Shank


Dri o 500 115pc Cobalt Steel Heavy-Duty Jobber Drill Bit Set Bronze Finish Shank


$699.89


DRAPER Assorted Metric HSS Cobalt Drill Bit Merchandiser (130 Piece) 64044


DRAPER Assorted Metric HSS Cobalt Drill Bit Merchandiser (130 Piece) 64044


$612.78


Chicago-latrobe 29 Pc Jobber Drill Bit Set, Cobalt Steel, TiN  69870


Chicago-latrobe 29 Pc Jobber Drill Bit Set, Cobalt Steel, TiN 69870


$659.24


KEO 55617 Countersink, 6 FL, 120 Deg, 3 In, Cobalt


KEO 55617 Countersink, 6 FL, 120 Deg, 3 In, Cobalt


$645.00


KEO 55517 Countersink, 6 FL, 60 Deg, 3 In, Cobalt


KEO 55517 Countersink, 6 FL, 60 Deg, 3 In, Cobalt


$641.00


KEO 55577 Countersink, 6 FL, 100 Deg, 3 In, Cobalt


KEO 55577 Countersink, 6 FL, 100 Deg, 3 In, Cobalt


$632.95


DEWALT DWA1240 Pilot Point Industrial Cobalt Drill Bit Set (14 Piece)


DEWALT DWA1240 Pilot Point Industrial Cobalt Drill Bit Set (14 Piece)


$24.99


The DEWALT DWA1240 14pc Pilot Point Industrial Cobalt Drill Bit Set is designed for maximum speed and life in stainless steel and other hard metals. These bits features a pilot point and split tip design that starts on contact and eliminates bit walking along for more control. Commonly used for drilling into stainless steel, drilling into angle iron, I-Beams, and other similar metals. Set includes…

Irwin Industrial Tools 316015 Cobalt Drill Bit Set, 15-Piece


Irwin Industrial Tools 316015 Cobalt Drill Bit Set, 15-Piece


$21.00


Constructed of M-42 eight percent cobalt high speed steel for super abrasive resistance in tough metals. Bits have a 135 degree split point which reduces feed pressure for easier penetration. Includes: (2) 1/16″, (2) 5/64″, 3/32″, (2) 7/64″, 1/8″, (2) 9/64″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16″, 3/8″ and (1) rubber-sided case with sliding latch for added security….

CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case


CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case


$14.33


Specifications Item Type: Step Drill Size: #1: 3/16″ to 1/2″ 6 Steps (3/16”, 1/4”, 5/16″, 3/8”, 7/16”, 1/2”) #2: 1/8″ to 1/2″ 13 Steps (1/8″, 5/32″, 3/16”, 7/32″, 1/4”, 9/32″, 5/16″, 11/32″, 3/8”, 13/32″, 7/16”, 15/32″, 1/2”) #3: 1/4″ to 3/4” 9 Steps (1/4”, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″) #4: 1/4″ to 1-3/8″ 10 Steps (1/4”, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/8″,…

Drill Doctor DD350X Drill Bit Sharpener


Drill Doctor DD350X Drill Bit Sharpener


$49.95


Constructed as a value-priced drill bit sharpener the Drill Doctor 350X Drill Bit Sharpener is ideal for shops that use the most common bit styles and is compatible for use with wood and light metals. The new easy-to-use design features a front-loading chuck with simplified alignment and sharpening procedures. Easily sharpen 3/32″ to 1/2″ standard twist bits with 118 degrees or sharpen high-speed …

Gyros 45-32315 Premium Industrial Grade Cobalt 115-Pieces Drill Bit Set


Gyros 45-32315 Premium Industrial Grade Cobalt 115-Pieces Drill Bit Set


$449.97


Jobber Length Cobalt Drill Bit Set for stainless steel and other hard metals….

Neiko Super-Hard 13 Pcs Cobalt Drill Bit Set, Model: 10178A


Neiko Super-Hard 13 Pcs Cobalt Drill Bit Set, Model: 10178A


$29.92


A Great Quality Cobalt Drill Bit set, 135 Split point Design, Staright Shank, Ground Flute…

SE 7503SD 3-Piece Power Extension Bit Set for Drills


SE 7503SD 3-Piece Power Extension Bit Set for Drills


$1.99


This power extension bit set adds versatility to your power drills with a socket adapter that has a hex bit for all power drill chucks—great to use at home, in the workshop or warehouse for hobby, hardware, auto repair, and so much more. PRODUCT FEATURES: • Driver sizes: ¼”, ⅜”, ½” • Average total length: 2-½” • Driver width: ¼” • Chrome vanadium, heat-treated steel …

JRL HSS 10 pc 1/8 Double Ended Cobalt M35 Drill Bit Set


JRL HSS 10 pc 1/8 Double Ended Cobalt M35 Drill Bit Set


$3.78


Description:10pc 1/8″ Double Ended HSS M35 Drill Bit Set *High Quality Cobalt M35 Steel Construction *135 Degree Split Point *Fully Ground10x Double Ended Drill 1/8″ Double Ended HSS M35 Drill Bit Set 2″ total length…

Dent Fix DF1780 High Speed Cobalt Drill Bit (- 8x80mm)


Dent Fix DF1780 High Speed Cobalt Drill Bit (- 8x80mm)


$21.62


Specifically designed for the abuse of spot weld drilling. Flat ground for strength, centering nib to prevent walking. Titanium heat resistant coating extends drill life by 50%…

DMTRADE Practical Heat Treated HSS Spiral Titanium Coated Step Drill Bit Cobalt HEX Shank


DMTRADE Practical Heat Treated HSS Spiral Titanium Coated Step Drill Bit Cobalt HEX Shank


$7.84


Features: Brand new and high quality. Heat Treated HSS with Titanium Nitride Coating. New Spiral Titanium Coated Step Drill Bit that covers 10 sizes. Spiral Flute Design made the penetration faster without chipping. This Step Drill Bit is ideal for variety of materials from metal, plastic, fiberglass to wood. They also help to enlarge existing holes. Specification: Materials:HSS. Color:as the p…

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