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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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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


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 !


$1,500.00


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


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


$1,438.43


Jobber Drill Bits Cle-Line C21125 135 Degree Heavy-Duty Cobalt Length Set Metal


Jobber Drill Bits Cle-Line C21125 135 Degree Heavy-Duty Cobalt Length Set Metal


$1,039.72


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


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


$852.67


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


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


$783.00


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


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


$680.71


Gyros Gyros 45-32308 Premium (Made in US) Industrial Grade Cobalt Reduced Shank


Gyros Gyros 45-32308 Premium (Made in US) Industrial Grade Cobalt Reduced Shank


$663.19


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


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


$566.72


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


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


$637.95


KEO 55597-TiN Countersink, 6 FL, 110 Deg, 3 In, Cobalt, TiN


KEO 55597-TiN Countersink, 6 FL, 110 Deg, 3 In, Cobalt, TiN


$636.95


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


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


$631.95


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


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


$631.58


KEO 55537-TiN Countersink, 6 FL, 82 Deg, 3 In, Cobalt, TiN


KEO 55537-TiN Countersink, 6 FL, 82 Deg, 3 In, Cobalt, TiN


$631.58


Gyros Gyros 45-32315 Premium (Made in US) Industrial Grade Cobalt 115 pc Drill B


Gyros Gyros 45-32315 Premium (Made in US) Industrial Grade Cobalt 115 pc Drill B


$610.01


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


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


$610.00


Irwin 3018002 8x 29 Piece Cobalt M-35 Metal Index Drill Bit Set New


Irwin 3018002 8x 29 Piece Cobalt M-35 Metal Index Drill Bit Set New


$608.50


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


$22.89


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″,…

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


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


$19.23


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


$22.71


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….

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….

WXLAA 10pcs Hand Craft Cobalt Drill Bit Ideal Tool HSS Steel Titanium Straight Shank Twist Diameter 1mm


WXLAA 10pcs Hand Craft Cobalt Drill Bit Ideal Tool HSS Steel Titanium Straight Shank Twist Diameter 1mm


$2.19


Features: Higher lifetime compared to normal HSS drills. Straight shank twist mainly by the shank and working parts. Tool in the highest-quality version for life daily use in the workshop. Work Department of the guide portion serves as a guide and prepare the grinding action, a spiral chip flutes made to facilitate the guide crumbs. HSS also known as high-speed steel, knife pin tool most commonly…







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


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


$4.72


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


$4.15


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…

MIBRO 492470 Cobalt Metal Master Drill Bit Set, 1/6in. to 3/8in., 17 Pieces


MIBRO 492470 Cobalt Metal Master Drill Bit Set, 1/6in. to 3/8in., 17 Pieces


$32.33



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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