Drill bit for hard steel

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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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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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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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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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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Chicago Latrobe 150 Series High-Speed Steel Jobber Length Drill Bit Set with Metal Case, Black Oxide Finish, 118 Degree Conventional Point, Metric, 25-piece, 1.0mm - 13.0mm in 0.5mm increments

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Description:

Chicago Latrobe Jobber Length Drill Set with Metal Case - Sizes in Set: 1mm - 13mm x 0.5mm; Number of Tools: 25; Material Type: HSS; Point Angle: 118 Degrees; Finish/Coating: Black 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
  • High-speed steel (HSS) provides hardness for wear resistance
  • Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material
  • 118-degree conventional point for a range of drilling applications
  • Drill bits conform to DIN 338 standard
  • Made in the USA





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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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Grizzly G9753 - TiN Coated Drill Set - 50 pc. Metric

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Description:

This 50-pc. Metric Drill Set is Titanium Nitride coated high speed steel for toughness and long service life. Includes 1mm through 6mm in .1mm increments plus steel index.

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  • TiN coated (Titanium Nitride)
  • Package dimensions: 4.4" x 6.2" x 1.5"
  • Approximate weight: 1.55 lbs
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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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Ginode 15Pcs Metric M35 Cobalt Steel Drill Set Heat Resistant Twist Drill Bits with Straight Shank 1.5-10MM Steel Pounch Split Point Drilling For Metal Steel with 1Pc Automatic Center Punch

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Description:

15x Cobalt Steel Drill Bits:

Specification:
Material: HSS-Co 5 M35 Cobalt
Over length: 40133mm
Quantity: 15pcs per set
Size: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 10mm

Features:
Ideal For DIY, Home and General Building/Engineering Using.
HSS Drill Bit Set For Stainless Steel, Steel, Copper, Iron, Aluminum, Wood And Plastic.
M35 Cobalt High Speed Steel For Drilling Steel, Stainless Steel, Hard Metal and Iron.
Alloyed with 5 Cobalt to improve heat resistance which will perform and outlast normal HSS bits.
Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel.

1x Automatic Center Punch:

Specification:
Material: Brass
Color: Gold(as pictures shown)
Length: 5"
Handle diameter: 1/2"

Features:
Adjustable cap regulates striking force.
Brass body has a deeply knurled surface for nonslip control.
Delivers an automatic spring-driven strike when pressed against surface.
Can be used for vehicle emergencies as a side window glass breaking tool.
light weight, aluminum center punch is perfect for marking a variety of materials.
Marks workpiece with a dimple, creating a starting point that prevents screws and drills from wandering.

Package includes:
15x Cobalt Steel Drill Bits
1x Automatic Center Punch

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  • 15Pcs HSS Drill Set, Straight shank & twisted drills, chisel edge reduces drilling resistance.
  • Designed for heavy duty use in all metals, including hard metals.
  • 1Pc Automatic Center Punch, Brass body has a deeply knurled surface for nonslip control.
  • Marks workpiece with a dimple, creating a starting point that prevents screws and drills from wandering.
  • Package includes: 15x Cobalt Steel Drill Bits, 1x Automatic Center Punch.



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Drill bit for hard steel