(Part 2) Reddit mentions: The best industrial drill bits
We found 68 Reddit comments discussing the best industrial drill bits. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 29 products and ranked them based on the amount of positive reactions they received. Here are the products ranked 21-40. You can also go back to the previous section.
21. TEMO M35 Cobalt Step Drill Double Flute, 6 Size From 3/16 Inch (4.8 mm) To 1/2 Inch (12.7 mm), 1/4 Inch (6.4 mm) Hex Shank
- M35 cobalt step drill 1/4" (6.35mm) shank 6 hole 3/16" (4.76mm) to 1/2" (12.7mm)
- 6 hole sizes: 3/16" (4.76mm), 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.52mm), 7/16" (11.11mm), 1/2" (12.7mm), with 1/16" (1.59mm) increments. 1/4 Inch Shank with 3 flats to eliminate slipping
- Smooth cutting double-fluted design for true round hole; Self-starting for clean holes in thin materials. The step drill bit is made with M35 cobalt. It is ideal for variety of materials from stainless steel, metal, plastic, fiberglass to wood. They also help to enlarge existing holes. M35 HSSCo is a high speed steel alloy made up of 5% cobalt. M35 is similar to M2, but with 5% cobalt added.
- The addition of cobalt increases heat resistance. It is widely used in metal manufacturing because of its ability to resist wear over conventional high speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time between tool changes. M35 is also less prone to chipping when used for interrupted cuts.
- US-BASED CUSTOMER SERVICE: Available by chat, email, phone, or visit us at our customer service center in La Crosse, WI.
Features:
Specs:
| Color | Silver |
| Height | 1 Inches |
| Length | 3 Inches |
| Size | Cobalt 6 Double |
| Weight | 2 ounces |
| Width | 1 Inches |
22. Viking Drill and Tool 00721 Type 78-UB Gold Oxide Ultra Bit (3 Piece)
- Special axial and radial flute design increases work piece penetration
- Dual flute construction drills clean accurate holes in thin materials, quickly and easily
- 3-Piece Gold oxide set
- 1/8 - 1/2, 3/16 - 1/2 and 3/16 - 7/8-inch
- Quantity: 1-per pack
Features:
Specs:
| Height | 1.5 Inches |
| Length | 8 Inches |
| Number of items | 1 |
| Weight | 0.5 Pounds |
| Width | 5 Inches |
23. IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)
- This product is easy to use.
- This product is highly durable
- This product is manufactured in United States.
- Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.
- Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking.
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.
- Non-skid tip, no need for center punches. 3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification.
- Backed by a full lifetime warranty.
Features:
Specs:
| Color | Silver |
| Height | 6 Inches |
| Length | 0.1 Inches |
| Number of items | 1 |
| Size | #4 (3/16-7/8") |
| Weight | 0.19 Pounds |
| Width | 3 Inches |
24. Titanium Step Drill Bit Set Multiple Hole with Automatic Center Punch, 3-Piece Set | 4-32mm/4-12mm/ 4-20mm, High Speed Steel Drill Bits Set with Double Cutting Blades Design
TITANIUM | HIGH SPEED STEEL: Classic High Speed Steel With Titanium Coating For Proven Capability and DurabilityTRI-FLATTED SHANK: Fits Into Power Tools Chuck Securely and Eliminates SlipSPLIT POINT TIP: Increases Cutting Speed With Self-Centering And Prevents WalkingDRILLING HOLES IN: This Multiple...
Specs:
| Color | Gold |
| Size | 3PC |
25. Vastar Titanium Step Drill Cone Drill Bits, High Speed Steel 10 Steps 1/4" to 1-3/8"
The Vastar step drill bit with 10 step sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8"Tri-flatted shank of step drill fits into drill chuck of power tools securely and avoids slideEASY DRILLING: Two-fluted design provides faster, smoother cutting; Provided with small pressure a...
Specs:
| Height | 1 Inches |
| Length | 3 Inches |
| Size | 1 |
| Weight | 0.1 Pounds |
| Width | 1.2 Inches |
26. 4-42mm Step Cone Drill 14 Steps Hole Cutter HSS 4341 Titanium Finish Reamer TE859
Drills perfectly round holes in steel, brass, plastic, wood etc.3 sided shanks design in order to prevent slippage when in chuck.Surface treatment: Titanium Plating.Ranges for 4 42mm. Has a 10mm Shank.Extra Large Drill: 4mm-42mm.
Specs:
| Height | 1.968503935 Inches |
| Length | 7.086614166 Inches |
| Weight | 0.59083886216 Pounds |
| Width | 3.149606296 Inches |
27. Klein Tools 59009 High-Speed Steel Step-Drill Bit
Single-fluted design eliminates skidding and makes for easier resharpeningLaser-etched hole size are easy-to-read and permanentAnti-skid tip eliminates the need for center punching or pilot hole drilling for most sizesDrill multiple-size holes in thin sections of metal, plastic and wood using a sing...
Specs:
| Color | Silver |
| Height | 0.5 Inches |
| Length | 4 Inches |
| Number of items | 1 |
| Weight | 0.5 Pounds |
| Width | 0.5 Inches |
28. TACKLIFE 5PCS Titanium Step Drill Bit Set & Automatic Center Punch,PDH06A, High Speed Steel Drill Bit Set, 50 Sizes, Double Cutting Blades Design, Aluminum Case
▲ 50 SIZE IN 5 - The bits set includes five standard step drill bits that can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces▲ HSS & TITANIUM COATING - High speed steel makes it last longer than others, titanium coating ensures easily c...
▼ Read Reddit mentions29. JelBo Titanium Step Drill Bit Set, HSS Cone High Speed Steel Metal Straight Groove Hole Cutting Drill Bits Sharpener, 1/4" Hex Shank Quick Change Power Tools Kit 3Pcs/Set
Specs:
| Height | 1.57 Inches |
| Length | 3.94 Inches |
| Weight | 8 ounces |
| Width | 3.15 Inches |
🎓 Reddit experts on industrial drill bits
The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where industrial drill bits are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
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Summary
21. TEMO M35 Cobalt Step Drill Double Flute, 6 Size From 3/16 Inch (4.8 mm) To 1/2 Inch (12.7 mm), 1/4 Inch (6.4 mm) Hex Shank
- M35 cobalt step drill 1/4" (6.35mm) shank 6 hole 3/16" (4.76mm) to 1/2" (12.7mm)
- 6 hole sizes: 3/16" (4.76mm), 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.52mm), 7/16" (11.11mm), 1/2" (12.7mm), with 1/16" (1.59mm) increments. 1/4 Inch Shank with 3 flats to eliminate slipping
- Smooth cutting double-fluted design for true round hole; Self-starting for clean holes in thin materials. The step drill bit is made with M35 cobalt. It is ideal for variety of materials from stainless steel, metal, plastic, fiberglass to wood. They also help to enlarge existing holes. M35 HSSCo is a high speed steel alloy made up of 5% cobalt. M35 is similar to M2, but with 5% cobalt added.
- The addition of cobalt increases heat resistance. It is widely used in metal manufacturing because of its ability to resist wear over conventional high speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time between tool changes. M35 is also less prone to chipping when used for interrupted cuts.
- US-BASED CUSTOMER SERVICE: Available by chat, email, phone, or visit us at our customer service center in La Crosse, WI.
Features:
Specs:
| Color | Silver |
| Height | 1 Inches |
| Length | 3 Inches |
| Size | Cobalt 6 Double |
| Weight | 2 ounces |
| Width | 1 Inches |
22. Viking Drill and Tool 00721 Type 78-UB Gold Oxide Ultra Bit (3 Piece)
- Special axial and radial flute design increases work piece penetration
- Dual flute construction drills clean accurate holes in thin materials, quickly and easily
- 3-Piece Gold oxide set
- 1/8 - 1/2, 3/16 - 1/2 and 3/16 - 7/8-inch
- Quantity: 1-per pack
Features:
Specs:
| Height | 1.5 Inches |
| Length | 8 Inches |
| Number of items | 1 |
| Weight | 0.5 Pounds |
| Width | 5 Inches |
23. IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)
- This product is easy to use.
- This product is highly durable
- This product is manufactured in United States.
- Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.
- Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking.
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.
- Non-skid tip, no need for center punches. 3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification.
- Backed by a full lifetime warranty.
Features:
Specs:
| Color | Silver |
| Height | 6 Inches |
| Length | 0.1 Inches |
| Number of items | 1 |
| Size | #4 (3/16-7/8") |
| Weight | 0.19 Pounds |
| Width | 3 Inches |
24. Titanium Step Drill Bit Set Multiple Hole with Automatic Center Punch, 3-Piece Set | 4-32mm/4-12mm/ 4-20mm, High Speed Steel Drill Bits Set with Double Cutting Blades Design
TITANIUM | HIGH SPEED STEEL: Classic High Speed Steel With Titanium Coating For Proven Capability and DurabilityTRI-FLATTED SHANK: Fits Into Power Tools Chuck Securely and Eliminates SlipSPLIT POINT TIP: Increases Cutting Speed With Self-Centering And Prevents WalkingDRILLING HOLES IN: This Multiple...
Specs:
| Color | Gold |
| Size | 3PC |
25. Vastar Titanium Step Drill Cone Drill Bits, High Speed Steel 10 Steps 1/4" to 1-3/8"
The Vastar step drill bit with 10 step sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8"Tri-flatted shank of step drill fits into drill chuck of power tools securely and avoids slideEASY DRILLING: Two-fluted design provides faster, smoother cutting; Provided with small pressure a...
Specs:
| Height | 1 Inches |
| Length | 3 Inches |
| Size | 1 |
| Weight | 0.1 Pounds |
| Width | 1.2 Inches |
26. 4-42mm Step Cone Drill 14 Steps Hole Cutter HSS 4341 Titanium Finish Reamer TE859
Drills perfectly round holes in steel, brass, plastic, wood etc.3 sided shanks design in order to prevent slippage when in chuck.Surface treatment: Titanium Plating.Ranges for 4 42mm. Has a 10mm Shank.Extra Large Drill: 4mm-42mm.
Specs:
| Height | 1.968503935 Inches |
| Length | 7.086614166 Inches |
| Weight | 0.59083886216 Pounds |
| Width | 3.149606296 Inches |
27. Klein Tools 59009 High-Speed Steel Step-Drill Bit
Single-fluted design eliminates skidding and makes for easier resharpeningLaser-etched hole size are easy-to-read and permanentAnti-skid tip eliminates the need for center punching or pilot hole drilling for most sizesDrill multiple-size holes in thin sections of metal, plastic and wood using a sing...
Specs:
| Color | Silver |
| Height | 0.5 Inches |
| Length | 4 Inches |
| Number of items | 1 |
| Weight | 0.5 Pounds |
| Width | 0.5 Inches |
28. TACKLIFE 5PCS Titanium Step Drill Bit Set & Automatic Center Punch,PDH06A, High Speed Steel Drill Bit Set, 50 Sizes, Double Cutting Blades Design, Aluminum Case
▲ 50 SIZE IN 5 - The bits set includes five standard step drill bits that can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces▲ HSS & TITANIUM COATING - High speed steel makes it last longer than others, titanium coating ensures easily c...
▼ Read Reddit mentions29. JelBo Titanium Step Drill Bit Set, HSS Cone High Speed Steel Metal Straight Groove Hole Cutting Drill Bits Sharpener, 1/4" Hex Shank Quick Change Power Tools Kit 3Pcs/Set
Specs:
| Height | 1.57 Inches |
| Length | 3.94 Inches |
| Weight | 8 ounces |
| Width | 3.15 Inches |
Both of these sets work well. You do get what you pay for....keep that in mind.
Expensive
Norseman Uni-Bit Set https://www.amazon.com/dp/B0036YZWLE/ref=cm_sw_r_cp_api_PdTyzb1GGBTKB
Cheap
CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case https://www.amazon.com/dp/B0177PN6SI/ref=cm_sw_r_cp_api_reTyzbBCBYFH1
Just found it on Amazon it’s $12.49.
TEMO M35 Cobalt Step Drill Double Flute, 6 Size from 3/16 inch (4.8mm) to 1/2 inch
www.amazon.com/dp/B00385LJAO/ref=cm_sw_r_sms_c_api_lLFRAbRKA722W
I worked in a machine shop for eight years before becoming an electrician...trust me this will work.
This Step Drill Bit is what you'll want. 9/16" - 7/8" is the standard size hole for most weldless bulkheads. You can find those bits cheaper, but that is one that will last.
Hole saw. http://www.amazon.com/13Pc-Hole-Door-Knob-Lock/dp/B004NJTYQA/ref=sr_1_4?ie=UTF8&qid=1453153378&sr=8-4&keywords=hole+saw+drill
or Unibit.
http://www.amazon.com/Klein-Tools-59009-High-Speed-Step-Drill/dp/B0035WK7AI/ref=sr_1_4?ie=UTF8&qid=1453153416&sr=8-4&keywords=unibit
But we typically don't have to drill hole in boxes, as they come with knockouts for the wire.
Get a 42mm step bit?
Step Drill
You can either drill a 10mm hole and file it out, or get a step drill to widen it.
https://www.amazon.co.uk/dp/B073QSPND1/ref=cm_sw_r_cp_apa_rfRLBb3H0BKJC
Stop bit. I think it was the 11/16 or 3/4" bit that did it.
https://www.amazon.com/gp/product/B0746FZT52/ref=oh_aui_detailpage_o01_s02?ie=UTF8&psc=1
You drill a pilot hole then use a step bit to drill the holes for the pass through fittings. The ekwb pass through fittings I used had a 20mm outer diameter so I just stopped drilling once the 20mm step was through. A tip is to use painters tape to mark the bit where you need to stop in order to prevent over drilling. I used a drill/tap combo bit and some m3 screws and nuts to drill and tap the screws for the res mounts on the mounting plate.
Xilko 3Pcs High-Speed Steel Step Drill Bit Set Power Tools Cone Titanium Coated Metal Hole Cutter 1/4" Hex Shank Drive Quick Change 4-12mm/4-20mm/4-32mm
https://www.amazon.com/dp/B074NNZR4L?ref=yo_pop_ma_swf