Drill bit GRAPHITE HSS cylindrical 11 mm for metal, model 55H036

GRAPHITE cylindrical HSS drill bit with an 11 mm diameter designed specifically for metalworking. Made from high-speed steel (HSS), this drill bit offers improved wear resistance and higher heat tolerance compared to standard carbon steel bits. It is intended for use with hand drills and drill presses to create precise holes in steel, iron and other ferrous and non-ferrous metals in workshop, construction and maintenance environments.

Advantages

The cylindrical shank provides stable clamping in standard chucks, reducing runout and improving hole accuracy. High-speed steel construction increases durability and allows the bit to withstand higher cutting temperatures, which extends tool life during continuous drilling. The 11 mm diameter is suited for medium-sized holes common in metal fabrication and repair tasks, enabling consistent performance when used with appropriate speed and lubrication.

Suitable for

• Drilling holes in steel and iron components
• Working with non-ferrous metals such as aluminum and brass
• Use in hand drills and drill presses in workshops
• Maintenance, repair and construction metalwork

Key specifications

• Cutting material: High-speed steel (HSS)
• Shank type: Cylindrical
• Diameter: 11 mm
• Intended material: Ferrous and non-ferrous metals
• Compatible tools: Hand drills and drill presses

How to use

Secure the drill bit in the chuck, ensuring the cylindrical shank is fully inserted and tightened to minimize wobble. Select a drilling speed appropriate for the metal type and bit diameter; use lower speeds for harder steels and higher speeds for softer non-ferrous metals. Apply steady pressure and allow the bit to cut without forcing; back the bit out periodically to clear chips if drilling deep holes. Use cutting fluid or lubricant to reduce heat and improve chip evacuation when working with thicker or harder metals.

Usage recommendations

Wear appropriate personal protective equipment, such as safety glasses and gloves. Match drill speed and feed to the material, use cutting fluid for prolonged drilling sessions, and replace the bit when signs of wear or chipping appear to maintain hole quality and tool safety.