Choosing the right and powerful drill bit in the market may get confusing sometimes, especially when you have too many options to consider. Today we will bring a side-by-side comparison between ten best drill bits for hardened steel bolt.
Selecting the right tool for the right job simplifies the job and increases one’s productivity. The tools may vary with price, brand and quality but no need to worry, as we are here to help you choose the best drill bit for hardened steel bolts. So let’s jump straight to the comparison.
Short Buyer Guide
So in the above analysis, we have listed the ten best drill bits for hardened steel bolts. Now it’s the choice of the user to decide what specifications are best suitable for them. However, they need to see and consider a few of the points before buying the drills listed above.
- Built Quality
- Number Of Pieces
- Suitable Pieces
- Price
- Design
- Weight And Size Of The Drill bits
- Material
- Sizes
- And Most Importantly, the Machine’s Power Description.
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Best Drill Bits for Hardened Steel Bolt
- 1. Bosch CO14B 14 Pc. Drill Bit Set
- 2. DEWALT DW1361 21 Pc. Drill Bit Set
- 3. IRWIN 63221 21 Pc. Drill Bit Set
- 4. Drill America KFD29J 29 Pc. High-Speed Steel Drill Bit Set
- 5. Spkline 13 Pcs Cobalt Drill Bit Set
- 6. IRWIN M35 (3018002) 29 Pcs Drill Bit Set
- 7. IRWIN Cobalt (316015) 15 Pcs Drill Bit Set
- 8. Dewalt DW1263 14-Piece Cobalt Drill Bit Set
- 9. Bosch TI9IM 9 Pc. Titanium Drill Bit Set
- 10. Dewalt (DW1177) 20-Piece Drill Bit Set
Our Top Picks for Best Corded Drills of 2024
Features
- Wide range of commonly used drill bits
- Durable and strong titanium design finish Reliable for wood and plastic surfaces
- Free from spin shanks
- Excellent for regular and professional use
- A thin web structure prevents breakage
Features
- Strong M-42 cobalt (high-speed steel) design finish
- Beautiful gold finish
- It comes with a variety of configurations
- 135-degree split point for reduced feed pressure
- Good option for drilling metal
- Spiral flute design
Features
- Attractive black and gold oxide finish
- Intense M-42 cobalt (high-speed steel) design finish
- 135-degree split point for reduced feed pressure
- Impressive plastic casing
- Spiral flute design
- Rustproof, Durable, and long-lasting
1. Bosch CO14B 14 Pc. Drill Bit Set
This set comes with a 14 Pieces Cobalt set. Durable and proper start reduces bit shaking on the material’s surface. The material used is M42 alloy containing 8% cobalt that delivers ten times the life versus the standard material.
It weighs almost 1.07 pounds and has a size of 9 x 4.6 x 1.6 inches. The best part is that it can quickly pierce through abrasive materials due to the rigid surface tip.
Durable and Sustainable Design
Talking about the design, it has some great features. For example, it contains a thick web helix design that adds to its stability in severe working conditions. Also, it is equipped with three flat shanks that hold the bit firmly and avoids bit slippage.
The surface or top of the bit is sharped and hardened enough to pierce through strong material. And sharpness provides a good grip of the drill bit that quickly captures and starts drilling the material.
Strong Material
Bosch drill bits are quite famous for their unique and everlasting design finish. The main ingredient lies within the built quality of these bits. The Bosch CO14B comprises a new and advanced M42 alloy with an 8% cobalt. This enables the drill bits to last longer than standard drills and deliver up to 10 times better life.
Due to excellent built quality and strong material, Bosch CO14B can provide excellent drilling experience in stainless steel, cast iron, titanium, or heavy-duty metal. And this all makes it one of the strongest drill bit in its category.
| Brand | BOSCH |
| Shank Type | Straight |
| Tool Flute Type | Spiral |
| Surface | 10 Millimeters |
| Material | Cast Iron,Metal,Metals,Stainless Steel |
- Great built quality
- Durable and strong design finish
- Reliable for tough surfaces
- The right combination of required tools
- Excellent for everyday and professional use
- Web helix drill bit design
- Suitable for drilling but not for cutting through the surfaces
- Sometimes, it can be non-responsive for steel
2. DEWALT DW1361 21 Pc. Drill Bit Set
The set contains 21 pieces. It has a dimension of 8.75 x 8.75 x 1.38 inches. The body is made up of titanium. This allows it to be the best speed drills on stainless steel and other hard metals. It weighs 1.05 pounds.
It comes with an outclass finish, and the built quality will make you fall in love with the design. Its tapered web provides more outstanding stability to reduce fracturing.
Consistent Performance
The drill’s pilot point is made up of titanium, which means that it lasts longer before shattering. It also means that it can deliver consistent performance on metal and wood. It also has a tapered web design for increased durability.
Diversity
Consequently, the set has many different types of drill bits. This different drill bit ranges from the size of 1/16 to 1/2 inches. Also, these are beautifully cased in a rigid plastic case for better care and long-lasting life. There are a total of 21 pieces in a drill set.
| Material | Titanium Nitride Coated |
| Finish Type | Titanium Nitride |
| Shank Type | Straight |
| Item Dimensions | 8.75 x 8.75 x 1.38 inches |
| Brand | DEWALT |
- Wide range of commonly used drill bits
- Durable and strong titanium design finish
- Reliable for wood and plastic surfaces
- Free from spin shanks
- Excellent for regular and professional use
- A thin web structure prevents breakage
- May get slow on metals occasionally
3. IRWIN 63221 21 Pc. Drill Bit Set
The set contains 21 pieces that are made up of cobalt. It weighs 11 x 2 x 2 inches. Its body uses M-42 alloy that has 5% cobalt. It comprises a 135-degree split point that helps reduce feed pressure. In short, this, too, provides the best heavy-duty performance.
Variety of Configurations
The drill bit set has many different configurations. Mainly it comes in 15pcs, 21pcs, and 29 pcs pro set. The material used is M-42 cobalt high-speed steel that provides good performance in tough conditions. The material contains 5% cobalt for better performance. The 21 pieces configuration is ideal for everyday use.
Immersive Drilling Experience
The bit set comes with a 135-degree split point that reduces feed pressure and enables easy penetration in drilling. It also helps to reduce physically applied pressure on drill and contributes to enhance the overall drilling experience.
Irwin drills bits have a strong spiral flute that helps yield quick chip ejection. The new, improved cobalt drill bits are preserved with a metal index case to keep safe for more extended periods.
| Material | Cobalt |
| Finish Type | Cobalt Alloy Steel |
| Shank Type | Straight |
| Cutting Angle String | 135 Degrees |
| Brand | Irwin Tools |
- Beautiful gold finish
- Strong M-42 cobalt (high-speed steel) design finish
- It comes with a variety of configurations to choose from
- 135-degree split point for reduced feed pressure and lessen physical pressure.
- A good option for drilling metal
- Spiral flute design
- Drill bits below 1/4 inch may turn useless for few users
4. Drill America KFD29J 29 Pc. High-Speed Steel Drill Bit Set
The best drill bit for hardened steel is Drill America’s KFD29J. It comes with the most number of pieces, i.e., 29. It is beautifully designed in a black and gold finish. The coating on this is designed to last longer while providing the best design finish. The dimensions are 6.4 x 3.3 x 3.3 inches, and it weighs 2.08 Pounds.
Heavy-Duty High-Speed Drill Bit Set
It comes with most drill bit pieces nicely packed in hard plastic carrying cases that are super easy to carry. They call it the killer force drill bit set because it can drill strong and tough surfaces like carbon steel, aluminum, stainless steel, and other hard metal materials.
The drill bit also has a 135-degree split point for improved performance. The carrying case also has a belt clip for easy and quick access.
Rust Proof
So indeed, the built quality is uncompromised in these drill bits. As mentioned above, it is made of high-speed steel material, which means it’s rustproof. This also means that the user can use them confidently on any material without worrying about water involvement. It’s rustproof, which means it has a long-lasting life.
| Material | High Speed Steel |
| Finish Type | Black and Gold Oxide |
| Shank Type | Round |
| Cutting Angle String | 135 Degrees |
| Brand | Drill America |
- Attractive black and gold oxide finish
- Intense M-42 cobalt (high-speed steel) design finish
- 135-degree split point for reduced feed pressure
- Impressive plastic casing
- Spiral flute design
- Rustproof, Durable, and long-lasting
- Sometimes, it’s hard to find the spare parts
5. Spkline 13 Pcs Cobalt Drill Bit Set
The best drill bit for stainless steel, hardened metal, cast iron, and wood-plastic is the Spkline drill bit set. It comes in 13 pieces. The range of drill bit sizes varies from 1/16 inch to 1/4 inches. The coating on this drill bit set is designed to last longer while providing the best design finish. The dimensions 13.50 x 8.80 x 2.80 centimeters.
Heavy-Duty Quality
Talking about the built quality on this set, trust us! It’s too good. Yes! You read that right.
It’s made up of M-35 cobalt blended with industrial-grade high-speed steel pooled with 5% cobalt. This, combined, make it more challenging and sustainable than ever before. The built material not only adds to its performance on harder surfaces. It certainly does also makes it lasts four times longer than standard metal drills.
The story doesn’t end there. It also includes a 135-degree split point like others that eliminates the need for extra physical pressure on the drill. These all little yet powerful drill bits come in a metal casing that has sizes printed on it. So it’s not only easier to carry them; it’s also much more manageable.
Durability
The design is very strong, durable, and intended to last longer. The drill bits are present in very practically used sizes. The drills are meant for precise and heavy-duty drilling tasks on plastic, wood, or even metal. The shank is straight and can easily fit into many electric-powered drills. The metal casing also contributes to its sustainability and long-lasting life.
| Material | Metal |
| Cutting Diameter | 1.5 – 6.5 Millimeters |
| Shank Type | Straight |
| Cutting Angle String | 135 Degrees |
| Brand | SPKLINE |
- Heavy-duty M-35 cobalt (high-speed steel) design finish
- 135-degree split point for reduced feed pressure
- Particular metal casing for easy ordered storage
- Straight shank fit
- Heat and scratch resistant durable, and long-lasting
- Chiefly it’s the right product and doesn’t have any such wrong sides
6. IRWIN M35 (3018002) 29 Pcs Drill Bit Set
The great companies don’t stop making great products time and again. IRWIN is of them. So this is a marvel by IRWIN. It is one of the best drill bits on the market right now. It consists of 29 pieces, and all designed and engineered to provide an excellent drilling experience.
The drill bits are highly customizable and available in a variety of piece count. The dimension of the item is 12 x 7.5 x 4 inches.
Drilling Capacity
The drill bits are made up of M-35 cobalt alloy that contains 5% cobalt. This makes it heat and scratch-resistant. The bits are designed to last longer and perform excellently in heavy-duty tasks.
The drill is designed with a 135-degree split point to relax the drill operator and reduce extra pressure during drilling. Overall it provides a good drilling experience for heavy and lighter tasks.
Detailed Design
Talking about the design, IRWIN didn’t leave any unsatisfactory fractions there. It has a spiral flute type and is made up of cobalt alloy. The finish is durable, and bits are nicely arranged in a metal box and organized for easy access.
The weight is also handy, i.e., 4.45 pounds. In General, it’s an excellent product for DIYers and metal workers. The straight shank can fit easily in a variety of drills.
| Material | Cobalt Alloy Steel |
| Finish Type | Cobalt Alloy Steel |
| Shank Type | Straight |
| Brand | Irwin Tools |
| Cutting Angle String | 135 Degrees |
- Durable M-35 cobalt (high-speed steel) design finish
- 135-degree split point for reduced feed pressure
- Particular metal casing for easy ordered storage
- Straight shank fit
- Heat and scratch resistant durable, and long-lasting
- The latest versions are available and performing better than these
7. IRWIN Cobalt (316015) 15 Pcs Drill Bit Set
This drill bit set comes in three choices to choose from 15, 21, and 29. Depending on your usage and working conditions, you can select a particular drill bit set.
It’s relatively harder to find a branded and satisfying piece of drill bit set at this nominal price. However, the company didn’t compromise on the built quality either.
Impressive Design
Speaking of the design, the company has done a great job. Just look at the beautiful black oxide finish made from cobalt underneath. All just in such a fantastic price tag. That’s awesome! Indeed it is.
Extremely Durable
Indeed, the designers have paid an equal amount of attention to the engineering of this drill bit. Like its design, it is also engineered stunningly. It includes a 135-degree split point. The material is extremely durable and made to last long. The built quality is good, and the drill bit is ideal for all drilling tasks.
| Material | Cobalt Alloy Steel |
| Finish Type | Cobalt Alloy Steel |
| Shank Type | Straight |
| Cutting Angle String | 135 Degrees |
| Amperage | Irwin Tools |
- Durable cobalt design finish
- 135-degree split point for reduced feed pressure
- Beautifully designed
- The cutting edges may wear out after some time. P.S it can be sharpened to turn into new
8. Dewalt DW1263 14-Piece Cobalt Drill Bit Set
Speaking of Dewalt’s DW1263, it has a clean design. The drill bit set has 14 high-quality drill bits and is sold at a reasonable price tag. Whether you want to drill stainless steel or even metal, the Dewalt drill bit set has got you covered.
Pilot Pointed Tips
Somewhat the most impressive thing about this drill bit set is that it comes with pointed pilot tips. The advantage of having these pilot pointed tips is that the drill bit immediately bites the surface and starts piercing right away as soon as you start drilling.
The way it provides the drilling experience is fantastic. Yes, trust us, you will feel twice as happy when you will recall the price you bought these sets.
Handy And Tough Casing
Well, these little yet chewy drill bits are housed in a handy, heavy-duty case that is extremely easy and super cool to carry. It’s made from the finest quality industrial-grade ABS material and is super durable. It firmly houses 14 drill bits and has dimensions of 19.1 x 11.4 x 2 centimeters. All these branded features come in a decent and much nominal price tag
| Material | Cobalt Alloy Steel |
| Finish Type | Cobalt Alloy Steel |
| Shank Type | Straight |
| Brand | Dewalt |
| Item Dimensions | 7.5 x 4.5 x 0.8 inches |
- Tough cobalt design finish
- The pilot pointed tips for more accuracy and
- cleaner drilling holes
- Heavy-duty yet handy case to carry drill bits
- Value for money
- Less number of drill bits. You may need some unique drilling bit that you may not find with this set, but it happens in very rare cases
9. Bosch TI9IM 9 Pc. Titanium Drill Bit Set
Nothing can beat a branded product, and things get much more enjoyable when we get all that in a very nice price range. So the Bosch drill bit set that we will be reviewing today comes in two configurations. i.e., five pcs and nine pcs.
Here we will be reviewing the nine pieces set. This drill bit set comes in a very cheap price tag. The design is super durable, and the built quality is stunning.
Titanium Built
Nothing can beat the class of titanium drill bit finish. The built material adds to this bit set’s durability, yet it also adds to the classical gold finish. The price is not much different for the two configurations. So get a 9-bit configuration, even if you have to pay the very minimal difference.
Excellent Performance
It comes with a no-skate-tip, which provides a very accurate start, and with that, you get clean and responsive drilling. The drill bits are made for heavy-gauge and high-carbon steel drilling experience. The story doesn’t end there!
The drill bits have a long design that reduces the motor torque by providing more motor power performance. The best part is that these drill bits are for impact driver as well. They are designed to work with impact as well as simple drills.
If you want to perform a heavy-duty drilling activity with these bits on some tougher surface, do read our comprehensive guide on drilling into bricks. You may find some useful information.
| Material | Carbon Steel |
| Finish Type | Titanium, Steel |
| Shank Type | Hex |
| Brand | BOSCH |
| Item Dimensions | 4.84 x 0.64 x 7.8 inches |
- Titanium design finish
- No skate tip
- Heavy-duty drill bits
- Long bits for effective drilling
- Shanks designed to work with impact drivers and drills.
- No proper casing
10. Dewalt (DW1177) 20-Piece Drill Bit Set
Depending on the customer’s need, they can choose between 5 different drill bit configurations. i.e. 13,14,16,17 and 20 pieces. The material used is metal and black oxide, and the drill bits are organized in a rigid plastic container. The color of these drill bits is black and gold. The item weighs 1.7 x 9 x 9 inches.
Casing And Spiral Flute Design
The drill bits are stored in a tough case made up of plastic and are indexed for easy organization of these drill bits. The drill bits are in black and gold finish. Overall the design is quite simple, and you might not find any fancy attention-grabbing features on this drill bit set.
The tools have a spiral flute design that enhances the entire drilling experience. The casing also includes a sliding grip-lock that keeps the drill bit safely closed in a container.
Ease To Use
The complete design is straightforward, and the drill bits are easy to use. The product uses a 135-degree split point for less feed pressure and reduces bit slipping. In short, it holds the drill bits firmly at their place.
| Material | Blend |
| Finish Type | Black Oxide |
| Black Oxide | Straight |
| Brand | DEWALT |
| Cutting Angle String | 135 Degrees |
- Metal design finish
- Sliding soft grip
- Nice finish
- Includes hard container
- 135-degree split point design
- No comfort/ add-on feature
Frequently Asked Questions
Conclusion
In the above article, we have enlisted the ten bestseller drill bit sets. There may be more to the list, yet the ones listed are mighty and have the best ranking and proven performance.
Don’t forget to read our short buying guide as it contains a shortlist of features that you must look at before buying that product. The user can choose from those mentioned above according to their needs and requirements.
