Best hss twist drills

If you’re in need of high-quality drill bits for your drilling projects, then look no further than HSS twist drills. These drill bits are made from high-speed steel (HSS), which is known for its hardness and ability to withstand high temperatures. HSS twist drills are commonly used in metalworking and woodworking applications, making them a versatile tool for any DIY enthusiast or professional.

When it comes to choosing the best HSS twist drills, there are a few factors to consider. The first is the size of the drill bit. HSS twist drills come in various sizes, ranging from small diameters for precision work to larger diameters for heavy-duty drilling. It’s important to choose the right size for your specific drilling needs to ensure optimal performance and accuracy.

In addition to size, another important factor to consider is the drill bit’s coating. HSS twist drills can be coated with various materials, including titanium nitride (TiN) and black oxide. These coatings provide increased durability and heat resistance, reducing friction and extending the life of the drill bit. Choosing a drill bit with a quality coating can help prevent overheating and improve drilling efficiency.

Lastly, consider the brand reputation and customer reviews when choosing the best HSS twist drills. Opt for well-known brands that have a history of producing high-quality drill bits. Reading customer reviews can give you valuable insights into the performance and durability of the drill bits, helping you make an informed decision.

Best HSS Twist Drills: 6 Factors to Consider Before Buying

When it comes to drilling holes in metal, high-speed steel (HSS) twist drills are a popular choice due to their durability, versatility, and efficiency. However, not all HSS twist drills are created equal, and there are several factors to consider before making a purchase. Here are six important factors to keep in mind:

1. Material:

The material that the HSS twist drill is made of is a crucial factor to consider. Look for drill bits that are made from high-quality HSS, as this will ensure they are strong and capable of drilling through tough materials like stainless steel and cast iron.

2. Coating:

Coatings can enhance the performance and durability of HSS drill bits. Look for coatings like titanium nitride (TiN), titanium aluminum nitride (TiAlN), or black oxide, as these can provide increased hardness and heat resistance, reducing friction during drilling.

3. Point Angle:

The point angle of the drill bit determines the type of hole it will produce. For general-purpose drilling, a point angle of 118 degrees is commonly used. However, for drilling harder materials, a point angle of 135 degrees or even 140 degrees may be more suitable as it provides better resistance against wear.

4. Flute Design:

The flute design of HSS twist drills affects their chip evacuation capabilities. Look for drill bits with a twisted flute design, as this helps to clear chips out of the hole, preventing clogging and allowing for faster drilling.

5. Shank Type:

Consider the shank type of the drill bit, as this determines its compatibility with different drill chucks. Common shank types include straight shank and reduced shank. Make sure to choose a drill bit with a shank size that matches your drilling setup.

6. Size and Set Options:

Lastly, consider the size options and set options available for the HSS twist drill. Depending on your specific needs, you may require drill bits in various sizes or a complete set of drill bits for versatility. Choose the option that best suits your drilling requirements.

By considering these six factors before buying HSS twist drills, you can ensure that you invest in the best drill bits for your drilling needs, providing efficiency, durability, and reliable performance.

The Importance of High-Speed Steel in Drill Bits

When it comes to finding the best hss twist drills, one of the most important factors to consider is the material from which they are made. High-speed steel (HSS) is a popular choice for drill bits due to its exceptional strength, durability, and heat resistance.

HSS is a type of tool steel that is formulated to withstand the high temperatures generated during drilling. This makes it ideal for use in applications where friction and heat are a concern, such as drilling through hard metals or other tough materials. The heat resistance of HSS ensures that the drill bit stays sharp, reducing the need for frequent re-sharpening and prolonging the life of the bit.

Another advantage of HSS is its versatility. It can be used to drill a wide range of materials, including stainless steel, cast iron, aluminum, and wood. This makes HSS twist drills a versatile tool for both professional and DIY applications.

Additionally, HSS twist drills offer excellent cutting performance. The sharp cutting edges and flute design of HSS drill bits allow for fast, efficient drilling, reducing the amount of force required and ensuring clean, accurate holes.

Overall, the material used in drill bits plays a crucial role in their performance and longevity. High-speed steel (HSS) is a top choice for professionals and DIY enthusiasts alike due to its exceptional strength, durability, heat resistance, and versatility. When looking for the best hss twist drills, be sure to prioritize the quality and performance of the material for optimal drilling results.

Size Matters: Choosing the Right Diameter and Length

When it comes to choosing the best HSS twist drills, size definitely matters. The diameter and length of the drill bits play a crucial role in determining their effectiveness for various applications. Selecting the right size can greatly impact the success and efficiency of your drilling projects.

Diameter: The diameter of the drill bit refers to the width of its cutting edge. It is an important factor to consider as it determines the size of the hole you will be drilling. Smaller diameter drill bits are ideal for precision drilling and creating small holes, while larger diameter bits are better suited for drilling larger and deeper holes.

Length: The length of the drill bit is another important consideration. Shorter drill bits are ideal for shallower holes or drilling in confined spaces, while longer bits are better for drilling deeper holes. The length of the bit also affects the stability and strength during drilling, so it’s important to choose the right length for your specific needs.

It’s essential to carefully assess your drilling requirements before selecting the diameter and length of your HSS twist drills. Consider the size of the hole you need, the material you will be drilling into, and the depth of the hole. By choosing the right size, you can achieve better results, prevent damage to your drilling equipment, and improve overall efficiency in your drilling projects.

Shank Type: Deciding between Round and Hex Shank

When it comes to choosing the best hss twist drills, one important factor to consider is the shank type. The shank is the part of the drill bit that is inserted into the drill chuck. There are two main types of shanks to choose from: round and hex shank.

Round shank drill bits have a cylindrical shape and are the most common type of shank. They are compatible with most standard drill chucks and can be used in a wide range of drilling applications. The round shape allows for a secure grip in the chuck, preventing the bit from slipping or spinning while drilling. Round shank drill bits are versatile and widely available.

  • Benefits of Round Shank:
  • Compatible with most drill chucks
  • Secure grip in the chuck
  • Wide range of applications
  • Widely available

On the other hand, hex shank drill bits have a hexagonal shape and are designed for use with a specialized hex shank drill chuck. The hex shape provides a more secure grip and reduces the chances of the bit slipping or spinning during drilling. Hex shank drill bits are often used in applications that require higher torque and heavy-duty drilling. They are commonly used in construction, woodworking, and metalworking industries.

  • Benefits of Hex Shank:
  • More secure grip
  • Reduced risk of slipping or spinning
  • Ideal for high torque and heavy-duty drilling
  • Commonly used in construction, woodworking, and metalworking

When deciding between round and hex shank drill bits, consider the specific requirements of your drilling tasks. If you need a versatile option that works with most standard drill chucks, round shank drill bits are a reliable choice. However, if you require a more secure grip and need to perform heavy-duty drilling, hex shank drill bits are the better option. Ultimately, the choice depends on your specific needs and preferences.

Drill Point Angle: Finding the Optimal Angle for Your Needs

Choosing the right drill point angle is crucial for achieving efficient and accurate drilling results. The drill point angle refers to the angle formed by the edges of the drill bit at the tip. Different drill point angles are designed for specific materials and drilling applications, so finding the optimal angle for your needs is essential.

One common drill point angle is 118 degrees, which is ideal for general drilling tasks in a wide range of materials including wood, plastic, and metal. This angle provides a good balance between cutting efficiency and strength. However, if you are drilling harder materials such as stainless steel or hardened steel, a drill point angle of 135 degrees or even 140 degrees might be more suitable. These angles help prevent the drill bit from overheating and provide better chip evacuation.

On the other hand, if you are drilling softer materials like aluminum or brass, a sharper drill point angle of around 90 degrees could be beneficial. This angle allows for more aggressive cutting and prevents the drill bit from “walking” or slipping on the surface of the material.

When selecting the optimal drill point angle for your needs, it is important to consider the material being drilled, the desired hole size and depth, as well as the cutting power and speed of your drilling machine. Experimenting with different drill point angles and monitoring the drilling results can help you determine the best angle for maximum efficiency and accuracy.

5 Best hss twist drills

13Pack HSS Twist Drill Bit Set Metric M35 Cobalt Steel High Speed Steel Titanium Coated Drill Bit Tool Extremely Heat Resistant with Straight Shank 1.5mm-6.5mm for Drilling Tool Wood, Metal & Plastic

as of September 29, 2023 12:42 pm


  • 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
  • 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"
  • 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.
  • Metal cutting range: thin metal plates (steel and aluminum) and body panels (metal, glass fiber and plastic), low carbon steel, they are very effective on these projects
  • 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

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

1 used from £35.62
Free shipping
as of September 29, 2023 12:42 pm


  • 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 Design 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.
  • The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit.
  • 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] .

Rennie Tool Company 1-13mm HSS Cobalt Drill Bit Sets With Metal Case - Drill Bits Set of 25 Pieces for Stainless Steel, Aluminium, Hards Metals, Cast Iron, Plastic & Wood

2 new from £54.99
Free shipping
as of September 29, 2023 12:42 pm


  • WIDE RANGE OF VERSATILITY - This comprehensive 25-piece metal drill bit set covers a wide range of drilling needs, with sizes ranging from 1 - 13mm In 0.5mm Increments (Supplied In Metal Case). Experience versatility in your projects with these carefully selected drill bits which are suitable for pillar drills, handheld electric drills, battery powered drills etc
  • HIGH-SPEED STEEL (HSS) COBALT CONSTRUCTION - Our high-quality M35 HSS cobalt drill bits offer exceptional hardness, heat resistance, and durability. This Drill Bits Set are specifically designed to handle tough materials like stainless steel, cast iron, and hardened alloys, ensuring consistent performance and extended tool life
  • PRECISE AND EFFICIENT DRILLING - Our HSCO HSS drill bit set features precision-ground drill bits with a 135-degree split point tip (only applicable to sizes 3mm and above), enabling fast and accurate drilling without the need for pre-punching. Enjoy effortless, precise and clean holes every time with this drill bit set .
  • ENHANCED PERFORMANCE - The HSS cobalt construction of these metal drill bits allow for higher cutting speeds and improved chip evacuation, resulting in faster and more efficient drilling. Increase productivity and reduce downtime with these drill bits
  • EXCEPTIONAL RESULTS - This metal drill bit set delivers exceptional results such as high drilling speed, superior accuracy, and extended tool life across a variety of materials including metal, stainless steel, cast iron, plastic, wood, and composites.

Holdfiturn 25Pcs Drill Bits Set with Case 1-13mm HSS Cobalt Robust Line Brad Point Professional Twist Drill Bit Set for Stainless Steel Metal Wood

as of September 29, 2023 12:42 pm


  • HIGH QUALITY: The drill bit set for metal is made of high quality high speed steel, which provides better stability, robustness and greatly extends the service life.
  • PREMIUM QUALITY PERFORMANCE: The pocket hole drill bit's head is designed with 135°, which effectively prevents accidental walking and allows for faster chip removal, ensuring smooth chips and improved work efficiency. Less heat is generated during use and there is less wear and tear, thus ensuring durability and long-lasting performance.
  • EASY TO USE AND STORE: The steel drill bit comes with an outer box design, each drill bit has unique holes inside the box with clear divisions, making it easy to organise and access, and the outer box design also makes it easy for users to store and carry.
  • APPLICATION: The impact driver drill bit is widely used and generally ideal for drilling holes in a variety of materials including alloy steel, non-alloy steel, non-ferrous metals, plastics and wood. The drills have cylindrical shanks that are compatible with three-jaw drill chucks, making them suitable for use with more electric drilling machines on the market, making them easy to use.
  • PACKAGE INCLUDES: The drill bit case contains 25 pieces of drill bits, which are: drill bit set 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,10.5mm,11mm,11.5mm,12mm,12.5mm,13mm, different sizes of drills can meet the different needs of different people for different materials and different items, and increase the usage rate.

25Pcs HSS Twist Drill Bit Set, Metric Cobalt Twist Drill Bits 1-13mm, Heavy Duty Straight Shank Jobber Drill Bit Set with Plastic Casefor Stainless Steel and Hard Metal

2 new from £25.39
Free shipping
as of September 29, 2023 12:42 pm


  • 【Scope of Application】Ideal for drilling wood, steel, non-ferrous metal and plastics.Suitable for home improvement DIY and general industrial applications.
  • 【Easy to Store】25pcs high speed steel quick cut turbo drills with metal storage case which is durable for easy storage
  • 【Hige Quality】Self-centering turbo fast tip design, works well on metal sheets and curved surfaces, allows ONE-HAND drilling operation on round-pipes from any direction.
  • 【Easy to Use】Bits is Advanced 118 degree split point angle.Short chisel edge for reduced drilling resistance.It is very convenient to use
  • 【Make your Need】Our drill bit specifications are1-13 mm x 0.5 mm, you can choose to use according to your needs to bring you convenience.

Question and answer:

What is the drill point angle?

The drill point angle is the angle between the cutting edge and the centerline of the drill bit. It determines the shape and size of the cut made by the drill bit.

Why is finding the optimal drill point angle important?

Finding the optimal drill point angle is important because it can affect the drill’s performance, including the chip evacuation, hole quality, and heat generation. It can also extend the drill bit’s life.

How can I determine the optimal drill point angle for my needs?

The optimal drill point angle depends on various factors, such as the material being drilled, the drill bit diameter, and the drilling application. It is typically determined through experimentation and consulting manufacturer’s guidelines.

What is the most common drill point angle?

The most common drill point angle for general-purpose drilling is 118 degrees. However, there are other standard angles, such as 135 degrees for harder materials and 90 degrees for flat-bottom holes.

Can I use a drill bit with a different drill point angle than recommended?

While it is possible to use a drill bit with a different drill point angle, it may not provide optimal results. Using the recommended drill point angle ensures better performance, longer drill bit life, and improved hole quality.

What is the drill point angle and why is it important?

The drill point angle refers to the angle formed between the cutting edge of the drill bit and the centerline of the bit. It is important because it determines the performance and efficiency of the drill bit during drilling. Different materials require different drill point angles for optimal performance.

How do I determine the optimal drill point angle for my needs?

Determining the optimal drill point angle depends on the material you are drilling into. Softer materials like wood typically require a sharper drill point angle (around 90 degrees) for cleaner cuts. Harder materials like metal may require a larger drill point angle (around 135 degrees) for better chip removal and reduced heat build-up. It is best to consult the manufacturer’s recommendations or do some testing to find the optimal angle for your specific needs.


In conclusion, the drill point angle is a crucial factor in determining the performance and efficiency of drilling operations. The optimal angle depends on the specific needs of the task at hand, such as the material being drilled and the desired outcome. By understanding the different drill point angle options and their benefits, users can make informed decisions to achieve the best results. It is essential to consider factors such as chip evacuation, cutting speed, and tool life when choosing the angle. With proper selection and maintenance, drill bits with the right point angle can deliver precise and effective drilling operations for a wide range of applications.

Harrison Clayton

Harrison Clayton

Meet Harrison Clayton, a distinguished author and home remodeling enthusiast whose expertise in the realm of renovation is second to none. With a passion for transforming houses into inviting homes, Harrison's writing at brings a breath of fresh inspiration to the world of home improvement. Whether you're looking to revamp a small corner of your abode or embark on a complete home transformation, Harrison's articles provide the essential expertise and creative flair to turn your visions into reality. So, dive into the captivating world of home remodeling with Harrison Clayton and unlock the full potential of your living space with every word he writes.

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