19 Best and Coolest Cobalt Hss Drill Bits for 2020

 

3 Pack Irwin 3016016 1/4″ x 4″ Cobalt HSS Drill Bit Carded - 1/4″, cobalt bit, 135 degree split point to minimize walk, 8% cobalt for higher heat & abrasion resistance, heavy duty web construction for strength & durability, for tough metal drilling, including heavy duty abrasive, alloy metal drilling on hardened steel, cast iron & stainless steel, carded.

 

2 Pack Irwin 3016012 3/16″ x 3-1/2″ Cobalt HSS Drill Bit Carded - 3/16 x 3-1/2 cobalt hss drill. Heavy duty web construction for strength & durability. For tough metal drilling, incl heavy duty abrasive, alloy metal drilling. 3-3/4″ standard jobber length.

 

Cobalt Hss Drill Bit 7/32 Inchx3-3/4 Inch-Carded-2 Pack - Comes in a durable metal index carry case for organization and storage sizes are clearly labeled. Spiral flutes on screw extractors dig into the screw, increasing grip as torque is applied. Left-handed drill bits are made from cobalt fortified high speed steel for increased durability and service life. 2 pack cobalt hss drill bit 5/16 inchx4-1/2 inch-carded. 2 pack cobalt hss drill bit 7/32 inchx3-3/4 inch-carded.

 

Hymnorq 15 Piece Metric M35 Cobalt HSS Drill Bit Kit with Straight Shank for Drilling Cast Iron, Brass, Aluminium, Stainless Steel and Other Hard Materials - 15pc metric set, the set includes 15pcs of m35 cobalt steel twist drill bits 15mm, 2mm, 25mm, 3mm, 35mm, 4mm, 45mm, 5mm, 55mm, 6mm, 65mm, 7 mm, 8 mm, 9 mm, 10 mm well organized in a plastic indexed storage case for easy transport to your worksite. 135°split point, the 135°quick-cut split point are self-centering and able to penetrate metals quickly with less pressure, prevent bits from “walking and wanding” easy cutting without need of center punch. Downloadable user guide, we’ve summed up some tips of drilling metals, including a rpm chart for several common metals, based on our reviews and some articles on the internet in most cases, our customers would get a much better result with these tips welcome to download. For metalworking, particularly successful in cutting through hard metals(hardness less than hrc38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too not for hardened steel / high carbon steel try to adjust the rpm when it fails to penetrate. Cobalt steel, manufactured from m35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average hss drill bit.

 

5 Pcs Pack 11/32″ Inch M35 HSS Cobalt Drill Bit Jobber Length Drill Bits Twist Drill Bits 135 Deg. Split Point Drilling Steel, Meteal, Iron. - ●135-degree split-point tip starts drilling immediately with less force and eliminates “walking” across the work surface. ●m35 cobalt high speed steel for drilling steel, stainless steel, hard metal and iron. ●Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. ● Diameter 11/32″ flute length 3-7/16″ overall length 4-3/4″ hss e hss co cobalt drill bits. ●5pcs packed in a plastic bag for easy usage and store.

 

QTY 2-5.5mm Cobalt HSS Drill Bits – For Hardened Steels & Cast Irons [Misc.] - 5mm overview hss precision ground from m35 high speed steel bars with 5% cobalt. For alloys, hardened steels, cast irons, titanium and other hard-to-drill materials such as stainless steel. Cobalt drill bits 2pk 5. Always use cooling agent.

 

Hvlystory 74pcs 1-8mm Twist Drill Bits M35 Cobalt HSS Drill Bit Set Whole Ground Metal Reamer Tool - 5mm 10pcs 4mm 5pcs 2mm 10pcs 5mm 5pcs 2. 5mm 10pcs 6mm 5pcs 3mm 5pcs 7mm 2pcs 3. 2mm 5pcs 8mm 2pcs features suitable for luminum, wood, malleable and deep hole drilling positioning holes iron. Description 74pcs 1-8mm twist drill bits m35 cobalt hss drill bit set whole ground metal reamer tool specification material hss m35 cobalt diy supplies metalworking use metal drilling type twist drill bit net weight380g quantity 1mm10pcs 3. Difficult to machine the workpiece can be processed stainless steel, tool steel, through heat treatment, m35 cobalt high speed steel to obtain high hardness, high wear resistance and high toughness. 5mm 5pcs 1. Package included 1 x (74pcs 1mm-8mm) m35 cobalt high speed steel twist drill bit tool set. Can be used radial drill, bench drill or hand drill chuck for drilling operations.

 

6 Pack Irwin 3016010 5/32″ x 3-1/8″ Cobalt HSS Drill Bit Carded - 5/32″, cobalt bit, 135 degree split point to minimize walk, 8% cobalt for higher heat & abrasion resistance, heavy duty web construction for strength & durability, for tough metal drilling, including heavy duty abrasive, alloy metal drilling on hardened steel, cast iron & stainless steel, carded.

 

Neiko 01925A Screw Extractor and Left Hand Drill Bit Set, 10 Piece | Alloy Extractors | Cobalt HSS Drill Bits | - Spiral flutes on screw extractors dig into the screw, increasing grip as torque is applied. Comes in a durable metal index carry case for organization and storage sizes are clearly labeled. Set includes 5/64″, 7/64″, 5/32″, 1/4″, 19/64″ matching alloy extractors #1, #2, #3, #4, #5. Extraction bits easily remove broken screws, studs, bolts and other fittings. Left-handed drill bits are made from cobalt fortified high speed steel for increased durability and service life.

 

OKSLO 36 x 4.88 Cobalt HSS Drill Bit - For tough metal drilling, incl heavy duty abrasive, alloy metal drilling. Heavy duty web construction for strength & durability. 6″ standard jobber length. 1/2″ cobalt drill bit, 135 degree split point to minimize walk.

 

Cobalt Hss Drill Bit 5/16 Inchx4-1/2 Inch-Carded-2 Pack - Left-handed drill bits are made from cobalt fortified high speed steel for increased durability and service life. 135° degree split-point for fast penetration and accurate starting without center-punch. 2 pack cobalt hss drill bit 5/16 inchx4-1/2 inch-carded. Comes in a durable metal index carry case for organization and storage sizes are clearly labeled. Spiral flutes on screw extractors dig into the screw, increasing grip as torque is applied.

 

Screw Extractor and Left Hand Drill Bit Set, 10 Piece | Alloy Extractors | Cobalt HSS Drill Bits | - Set includes 5/64″, 7/64″, 5/32″, 1/4″, 19/64″ matching alloy extractors #1, #2, #3, #4, #5. Left-handed drill bits are made from cobalt fortified high speed steel for increased durability and service life. Extraction bits easily remove broken screws, studs, bolts and other fittings. Spiral flutes on screw extractors dig into the screw, increasing grip as torque is applied. Comes in a durable metal index carry case for organization and storage sizes are clearly labeled.

 

2 Pack Irwin 3016017 17/64″ x 4-1/8″ Cobalt HSS Drill Bit Carded - Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. 5/64 inch hss cobalt co5% fully ground jobber length twist drills general purpose. 17/64 x 4-1/8 cobalt hss. M35 cobalt high speed steel for drilling steel, stainless steel, hard metal and iron. 10pcs packed in a plastic bag for easy usage and store.

 

OKSLO American Tool Exchange 13/32 Cobalt HSS Drill Bit - &#X1f31fcomes in a durable metal index carry case for organization and storage sizes are clearly labeled. &#X1f31fleft-handed drill bits are made from cobalt fortified high speed steel for increased durability and service life. &#X1f31fspiral flutes on screw extractors dig into the screw, increasing grip as torque is applied. &#X1f31fextraction bits easily remove broken screws, studs, bolts and other fittings. &#x1f31fpackage includes 5-pc mutil-fluted, machined alloy steel screw extractor #1, #5 , 5pc left hand cobalt coated drill bits 5/64″, 7/64″, 5/32″, 1/4″, 19/64″.

 

10 Pcs Pack 15/64″ Inch M35 HSS Cobalt Drill Bit Jobber Length Drill Bits Twist Drill Bits 135 Deg. Split Point Drilling Steel, Meteal, Iron. - ●Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. ●m35 cobalt high speed steel for drilling steel, stainless steel, hard metal and iron. ●135-degree split-point tip starts drilling immediately with less force and eliminates “walking” across the work surface. ● Diameter 15/64″ flute length 2-5/8″ overall length 3-7/8″ hss e hss co cobalt drill bits. ●Packed in a plastic bag with lables on bag.

 

6 Pack Irwin 3016006 3/32″ x 2-1/4″ Cobalt HSS Drill Bit Carded - 3/32″, cobalt bit, 135 degree split point to minimize walk, 8% cobalt for higher heat & abrasion resistance, heavy duty web construction for strength & durability, for tough metal drilling, including heavy duty abrasive, alloy metal drilling on hardened steel, cast iron & stainless steel, carded.

 

2 Pack Irwin 3016006 3/32″ x 2-1/4″ Cobalt HSS Drill Bit Carded - 2-7/8″ standard jobber length. For tough metal drilling, incl heavy duty abrasive, alloy metal drilling. 3/32 x 2-1/4 cobalt hss drill. Heavy duty web construction for strength & durability.

 

10 Pcs Pack 5/64″ Inch M35 HSS Cobalt Drill Bit Jobber Length Drill Bits Twist Drill Bits 135 Deg. Split Point Drilling Steel, Meteal, Iron. - 10pcs packed in a plastic bag for easy usage and store. Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. 135-degree split-point tip starts drilling immediately with less force and eliminates “walking” across the work surface. M35 cobalt high speed steel for drilling steel, stainless steel, hard metal and iron. 5/64 inch hss cobalt co5% fully ground jobber length twist drills general purpose.

 

3 Pack Irwin 3016014 7/32″ x 3-3/4″ Cobalt HSS Drill Bit Carded - 7/32″, cobalt bit, 135 degree split point to minimize walk, 8% cobalt for higher heat & abrasion resistance, heavy duty web construction for strength & durability, for tough metal drilling, including heavy duty abrasive, alloy metal drilling on hardened steel, cast iron & stainless steel, carded.

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