AWTools drill bit AW41820 — pack of 10

AWTools drill bit AW41820 — pack of 10 is a set of ten identical high-speed steel twist drills designed for general-purpose metalworking and plastic drilling. Each bit is made from HSS-G M2 high-speed steel, precision ground with two cutting edges and finished with a black oxide coating. The drills feature a 135° centering point for accurate starts and reduced walking, and they are supplied together in a compact case for storage and transport.

Advantages

The HSS-G M2 construction provides improved wear resistance and heat tolerance compared with standard carbon-steel bits, supporting longer life under typical workshop and construction conditions. Precision grinding and the two-cutting-edge geometry deliver cleaner holes and consistent drilling performance. The black oxide finish helps resist corrosion and reduces friction. The 135° point angle improves centering for alloyed and unalloyed steels, grey cast iron, non-ferrous metals and plastic, while the pack of ten ensures you have multiple replacements or spares on hand.

Suitable for

• General-purpose drilling in workshops and maintenance
• Drilling alloyed and unalloyed steel
• Drilling grey cast iron and non-ferrous metals
• Drilling plastics and other soft engineering materials
• Situations requiring multiple identical replacement bits

Key specifications

• Material: HSS-G M2 high-speed steel
• Cutting geometry: precision ground, two cutting edges
• Coating/finish: black oxide
• Point angle: 135° centering point
• Pack quantity: 10 pieces in a storage case
• Intended materials: alloyed and unalloyed steel, grey cast iron, non-ferrous metals, plastics

How to use

Install an appropriate-sized AWTools AW41820 drill bit into a standard drill chuck and secure it firmly. Select a suitable cutting speed and feed rate for the material being drilled—lower speeds for harder alloys and higher speeds for non-ferrous metals and plastics. Use cutting fluid or coolant when drilling steels to reduce heat and prolong bit life. Start drilling with light pressure to allow the 135° centering point to engage, then increase pressure steadily while maintaining alignment. Withdraw the bit periodically on deep holes to clear chips and avoid clogging.

Usage recommendations

Store the bits in the supplied case to protect the cutting edges. For consistent results, use recommended drilling speeds and appropriate lubricants for metalworking; reduce speed and increase feed when drilling plastics to prevent melting. Replace bits that show visible wear or chipping to maintain hole quality and minimize the risk of breakage.