Hard drill bits

Migiwata Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 13pcs to Cut Through Hard Metals Such as Stainless Steel and Cast Iron

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Description:

M35 Grade Cobalt Steel

Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant.

135 Degree Split Point

The flater the drill, the smaller the chip width. This means less force required to remove metal, compared with lower angles like 90 and 118. This is important on hard stuff, because your power requirements are already more than mild steel, so making the chip load less helps. It also reduces heat since less surface area is generating the cut.

Lowest Cost Per Hole Drilled

Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer. With an extended tool life, Migiwata cobalt drill bits will give you the lowest cost per hole drilled.

For Drilling Stainless Steel

This set of Migiwata M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.

Tests shows that the M35 cobalt steel drill bits can penetrate a 5mm-thick 304 stainless steel plate in 5 seconds.

Not Suitable for Hardened Steel

M35 grade cobalt drill bits are NOT suitable for hardened steel, high carbon steel and heat-treated steel by the experiences of some customers, although some others said they worked well with hardened steel.

Cooling Liquid Required

Please use with cooling liquid to prolong the working life of the drill bits and to avoid overheating and breakage.

BUY WITH CONFIDENCE:

If you're not completely satisfied with the product quality, please contact us. Refund or free replacement.

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  • COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, extremely heat resistant; for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
  • NO CENTER PUNCH NEEDED - The 135 Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. Must be used and operated at proper RPMs for maximum efficiency
  • 13PC METRIC BITS - The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm
  • FOR METALWORKING - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.
  • SATISFACTION GUARANTEED - Here at Migiwata, we do 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.






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DEWALT Cobalt Drill Bit Set with Pilot Point, 14-Piece (DWA1240)

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Description:

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: (2) 1/16" bit, (1) 5/64" bit, (1) 3/32" bit, (1) 7/64" bit, (2) 1/8" bit, (1) 9/64" bit, (1) 5/32" bit, (1) 3/16" bit, (1) 7/32" bit, (1) 1/4" bit, (1) 5/16" bit, (1) 3/8" bit

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  • Designed for maximum speed and life
  • Pilot point and split tip design
  • No bit walking - more user control
  • Intended to be used on hard metals
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Wrightus Metric M35 Cobalt Steel Twist Drill Bit Set HSS Extremely Heat Resistant with Straight Shank to Cut Through Hard Metals Like A Hot Knife Through Butter,Such as Stainless Steel,Titanium Alloy

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Description:

Different types of drill bits are used to cut holes in different types of materials.Drill through metal like a champion!

Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer.

This set of Wrightus M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, wood, and plastic too.
Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant; this is an important factor in drilling hard materials because the friction of metal against metal can produce high temperatures that damage the material or the drill bit.

Tests shows that the M35 cobalt steel drill bits can penetrate a 5mm-thick 304 stainless steel plate in 5 seconds.
Notice: The working life of the drill bits can be largely prolonged by using with cooling liquid.

Specifications:
Material: M35 Cobalt Steel(5 Cobalt and 95 High Speed Steel)
Angle Point: 135 Degree
Flute Type: spiral
Hardness: Rockwell 67
Shank Type: straight shank

You will get:
1.5 mm Twist Drill Bit x 1pc
2 mm Twist Drill Bit x 1pc
2.5 mm Twist Drill Bit x 1pc
3 mm Twist Drill Bit x 1pc
3.2 mm Twist Drill Bit x 1pc
3.5mm Twist Drill Bit x 1pc
4 mm Twist Drill Bit x 1pc
4.5 mm Twist Drill Bit x 1pc
4.8 mm Twist Drill Bit x 1pc
5 mm Twist Drill Bit x 1pc
5.5 mm Twist Drill Bit x 1pc
6.5 mm Twist Drill Bit x 1pc
6.5 mm Twist Drill Bit x 1pc
Reusable Plastic Case x 1pc

No such words as "Cobalt Steel " is printed on the case, but they are.

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  • Faster Cutting and Longer Life- Our Twist Drill Bit HSS are 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 12 times when compared with an average HSS drill bit.
  • No Center Punch Is Needed-The 135 Quick-Cut points are self-centering and penetrate quickly with less pressure. Twist drill bit kit Will not "walk" or "wander"
  • Extremely Heat Resistant - twist drill bits Must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks
  • Metal Cutting - Drilling Steel, Stainless Steel, Hard Metal and Iron.Particularly successful in cutting through hard metals such as hard metal ,stainless steel and cast iron, although they can be used for softer materials, too
  • Easy Usage And Store -The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm,13Pcs Packed in a Plastic Bag For Easy Usage And Store





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Migiwata 1.0-10mm Metric Jobber Twist Drill Bits Set of 19pcs - Titanium Coated HSS 4241, Straight Shank - for General Purpose in Wood Plastic and Soft Metal Sheet

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Description:

Designed for General Drilling Purpose in Relatively Soft Materials

This set of Migiwata twist drill bits are designed for general purpose.

They are made of high-speed steel 4241. There are several commonly-used HSS types: 4241, 4341, M2, M35, M42. HSS 4241 is of the lowest price and relatively lower quality compared to others.

The material decides that they can be used mainly in drilling wood, plastic and soft metal sheet like aluminum.

If your purpose is to drilling metal, please buy our M35 grade drill bits. Both metric and fractional inch sizes are available.

Titanium Coating

There are two types of titanium coatings: industrial coating and decorative coating. The former one is quite expensive and only used on premium materials like M35 and M42.

The finish of this bit set is decorative titanium coating, mainly for anti-rust and decoration.

Package and Size Label

This bit set are packed in a economical hard paper box outside and a plastic bag inside. The size labels are engraved on the shanks of bits larger than 3mm in diameter. You need to identify the 4 smallest bits by length and thickness.

About Size Error

You may have noticed some negative reviews about size. The results vary due to different tool and different measuring ways. Please refer the last picture for right measuring method.

One better way to decide a bit's size is to drill a hole and measure the hole. Then you'll find that the size error of our product is quite small.

Responsive and Helpful Customer-service Team

If you have any pre-sale, after-sale question, please remember our customer-service team will respond to your email within 12 hours.

Please check our store's feedbacks and you'll be more confident about buying with us.

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  • 19pcs of Metric Twist Drill Bits - 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5mm, 10.0mm. Enough for daily use.
  • HSS 4241 - Made of high speed steel 4241 and coated with titanium for rust prevention.
  • Straight Shank and 118 Point Angle - Straight shank for standard drill chucks and collet chuck to hold firmly, assuring accurate centering; Helical flute for swarf to easily get out; standard 118-degree point configuration is ideal for general purpose drilling applications.
  • Usage - Mainly used for drilling wood and plastic, occationally for drilling soft metal like aluminium. Economic choice for home DIY, building and engineering use etc.
  • Satisfaction Guaranteed - Here at Migiwata 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.






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Metric M42 8 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

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Description:

Product Advantages:

(1) 3 Steps desigh tip starts drilling immediately with less force and eliminates "walking" across the work surface.
(2) Holds up better than generic high-speed steel,Cobalt gives high-speed steel more heat and wear resistance.
(3) This drill bits set is made of Premium Cobalt (80,000 dollars per ton).
(4) The Wnewtools metric cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, although they can be used for softer materials such as Aluminum,Plastic.

Some Important Tips about drilling stainless steel and hard metal:
    (1)Use steel nails to nail an anchor point on the surface of the steel plate.
    (2)Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel.
________________________________
                Stainless Steel                  
    ____________________________
      Drill diameter               RPM        
    ____________________________
      5mm                       1000700
    ____________________________
      5-10mm                     700350
    ____________________________
      10-15mm                   350200
________________________________

    (3)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and form a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you don't have engine oil.
    (4) Try to use a drill press.

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  • Premium M42 8 Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
  • 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
  • This Cobalt Drill Bit is Typically Capable of Running Three to Five 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.
  • 135 Degree Split Point Prevents "Walking" .19Pcs Jobber Drill Bits Includes :1mm\1.5mm\2mm\2.5mm\3mm\3.5mm\4mm\4.5mm\5mm\5.5mm\6mm\6.5mm\7mm\7.5mm\8mm\8.5mm\9mm\9.5mm\10mm (0.5mm Increments) .
  • GUARANTEEDIf you're not satisfied with our product, please contact us. Refund or free replacement.






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AccusizeTools - M35 HSS5 Cobalt Metric Drill Set, 135 Deg Split Point, 1 to 10mm by 0.5mm in Strong Rose-Plastic Box, 3110-1119

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Description:

  • Professional quality
  • Solid M35 =  H.S.S 5 Cobalt
  • 1mm to 10mm by 0.5mm
  • Straight shank, straight flute, Fully ground
  • In strong Rose plastic box







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set of 3 HSS6542 M2 Steel Spiral Groove Step Drill Bit Set for Stainless Steel Metal Wood Hole

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Description:

You can use one drill for diferent aperture
No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole
Recommend the drilling speed of 250--400 rpm
Specifications:
Material:HSS6542
Shank Type:Triangle shank
Type:Spiral groove

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  • Suit for use in hardness under 28 artifacts,(Such as: Stainless steel , iron plate, aluminum, wood )
  • You can use water to cooling it when it is work and it can be used for even longer
  • 4mm to 32mm 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
  • 4mm to 12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)
  • 4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm)


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Chicago Latrobe 550 Series Cobalt Steel Jobber Length Drill Bit Set with Metal Case, Gold Oxide Finish, 135 Degree Split Point, Metric, 25-piece, 1.0mm - 13.0mm in 0.5mm increments (Pack of 1)

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Description:

Chicago Latrobe Jobber Length Set with Metal Case - Sizes in Set 1.0mm - 13.0mm x 0.5mm; Number of Tools: 25; Point Angle: 135 Degrees; Material Type: Cobalt Steel; Finish/Coating: Gold Oxide

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  • Set of 25 jobber length drill bits includes metric sizes 1.0 through 13.0 mm in 0.5 mm increments
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
  • Gold oxide finish lubricates and provides wear resistance on ferrous materials
  • Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
  • Drill bits conform to DIN 338 standard overall length and flute length specifications
  • Made in the USA





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Migiwata Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 50pcs in 5 Sizes(1, 1.5, 2, 2.5, 3mm) to Cut Through Stainless Steel Cast Iron and Hard Metals

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Description:

M35 Grade Cobalt Steel

Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant.

For Drilling Stainless Steel

This set of Migiwata M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.

135 Degree Split Point

The flater the drill, the smaller the chip width. This means less force required to remove metal, compared with lower angles like 90 and 118. This is important on hard stuff, because your power requirements are already more than mild steel, so making the chip load less helps. It also reduces heat since less surface area is generating the cut.

Lowest Cost Per Hole Drilled

Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer. With an extended tool life, Migiwata cobalt drill bits will give you the lowest cost per hole drilled.

Not Suggested for Hardened Steel, High Carbon Steel and Steels Blended with Impurities

M35 grade cobalt drill bits are NOT suitable for hardened steel, high carbon steel and heat-treated steel by the experiences of some customers.

Cooling Liquid Required

Please use with cooling liquid to prolong the working life of the drill bits and to avoid overheating and breakage.

About Breakage

Please be careful when you drill holes with shese needle-like small bits. They're more likely to break than larger ones.

BUY WITH CONFIDENCE:

If you're not completely satisfied with the product quality, please contact us. Refund or free replacement.

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  • M35 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.
  • No Center Punch Needed - the 135 quick-cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander"
  • For Stainless Steel - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.
  • 50pcs Set - The set includes 50pcs of metric M35 cobalt steel twist drill bits: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10pcs of each size. These bits are quite small. Please refer to a second product picture.
  • Satisfaction Guaranteed - Here at Migiwata 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.






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Migiwata Titanium Coated High Speed Steel 6542 (M2) Metric 1/4" Hex Shank Spiral Flute 2-in1 Combination Drill and Tap Bit M3-M10 Set of 6pcs for Tapping Aluminum Plate Wood Copper Plate Iron Plate

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Description:

Overview
This set of drill tap bits are made of High Speed Steel 6542 (HSS M2). It's a tungsten-molybdenum high speed steel with a well-balanced composition suitable for a wide variety of applications. Because of its superior properties and relative economy, this set of drill tap bits is a better choice than the lower-priced silver HSS 4341 drill tap bits, if you're mainly tapping on metals.

These Migiwata drill taps are a great time saving accessory. Each one is a combination of a twist drill bit and a tap. The point is the same as a twist drill bit, which is self-centering. So you don't have to buy a centering drill bit or a center punch.Now you can drill and tap at the same time in one operation. Just drill until the drill section fully enters the material, then the tapping will start to occur.

When it reaches the right depth, reverse the drill to deburr and remove any swarf to complete the job. No tool changes, good alignment and fast cycle times make this a very productive tool.

The Migiwata tap drill set also features wide spiral flute, which allow the chips to easily get out of the hole, preventing chip crowding and breakage of tap drill bits.

NOTICE:
It's highly recommended that the combination drill and tap bits are used on a tapping machine.
If you apply an electric hand drilling machine to do the tapping job, please pay attention to your operating, because excessive shaking and tilting may affect the result and even break the bit.

Specification:
Material: HSS 6542(M2)
Coating: Titanium
Shank: 1/4" (6.35mm) hex shank
Color: Golden
Tapping Material: Aluminum Plate, Wood, Copper Plate, Plastic, Iron Plate

What you'll get:
M3x0.5 Drill Tap Bit x 1pc
M4x0.7 Drill Tap Bit x 1pc
M5x0.8 Drill Tap Bit x 1pc
M6x1 Drill Tap Bit x1pc
M8x1.25 Drill Tap Bit x 1pc
M10x1.5 Drill Tap Bit x 1pc

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  • This set of drill tap bits are made of HSS 6542(M2), which is much harder than the silver HSS 4341 bits and not easy to break. Suitable for drilling and tapping in aluminum plate, wood, copper plate, plastic, iron plate
  • Combine drill and tap in a single pass to save your labor and precious time
  • Self-centering point eliminates the need for center drilling or center punching
  • Wide flutes carry the chips out of the hole. Can be used on multi-spindle heads with reversing mechanisms for tapping in most materials
  • 6 sizes in one drill and tap bit set (M3, M4, M5, M6, M8, M10) to meet your diversified requirements; Quick change 1/4" (6.35mm) hex shank with Metric sizes engraved on the bits






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Hard drill bits