The Best #40 Drill Bit of 2023 – Reviewed and Top Rated
2,255 Reviews Scanned
- High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
- For use in wood, metal, stainless and other hard metal drilling
- 135° split point tip prevents drill from "walking"
- Combination of hardness and toughness for wear resistance
- Black and gold drills are manufactured from premium grade high speed steel
- Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Ideal for drilling in tough, high tensile strength materials
- Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Manufactured to National Aerospace standard 907
- Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium
- 135° split point tip prevents drill from walking
- Round shanks allow use with a wide variety of tool holding systems
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- 6" overall length for drilling where extra length for reach is required
- [1]: APPLY TO - The drill bit is suitable for daily equipment maintenance and repair, low-intensity applications, and medium to low-hardness metals, including thin stainless steel, steel, aluminum alloy, and copper. It is also effective for drilling wood and plastic materials, making it an excellent choice for various DIY projects around the home.
- [2]: SPECIFICATION - The drill bit has a cutting diameter of #40 (2.489mm/0.098inch), a flute length of 35mm/1.38 inch, an overall length of 60mm/2.36 inches, and a 118° standard point tip.
- [3]: INSTRUCTION - Set the suitable speed according to the material's hardness and the drill bit diameter. Higher speeds can be used for softer materials, while lower speeds should be applied for harder materials. Please refer to the details provided on the product page.
- [4]: ADVANTAGE - The 4341 high-speed steel material has high hardness, good wear resistance, and toughness, enabling it to withstand significant impact without easily breaking. Gold Finish can further enhance the drill bit's wear and corrosion resistance, thereby extending its service life.
- [5]: QUANTITY INCLUDED - Set contains 5pcs x #40 twist drill bits, perfect for home use, repairs, and small manufacturing projects. (Notice: it is recommended to drilling a small guide hole before drill a larger hole)
Last update on 2025-07-06 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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