Drill bit for metal Abraboro HSS cylindrical 12 mm set of 5 (AB00011201)

Abraboro HSS cylindrical drill bits for metal, diameter 12 mm, set of 5 are designed for drilling through steel and other ferrous and non-ferrous metals. Made of high-speed steel, these bits deliver wear resistance and heat tolerance appropriate for general metalworking and maintenance operations. The cylindrical shank fits standard chucks and allows straightforward mounting in hand drills and drill presses, while the 12 mm diameter provides a consistent hole size for fittings, fasteners, and component assembly.

Advantages

The high-speed steel construction provides balance between hardness and toughness, offering good cutting performance and resistance to softening at elevated temperatures. A set of five bits ensures immediate replacements on job sites and reduced downtime for repetitive drilling tasks. The cylindrical shank design facilitates secure clamping in common chucks and simple compatibility with a wide range of drilling equipment. The 12 mm diameter is suitable for creating precise, repeatable holes when working with sheet metal, plate, and structural components.

Suitable for

• Drilling holes in steel, stainless steel, aluminum and other metals
• Workshop maintenance and repair tasks
• Fabrication of metal structures and mounting brackets
• Preparing holes for bolts, rivets and threaded inserts
• Use in hand-held drills and drill presses with standard chucks

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 12 mm
• Shank: cylindrical (round) suitable for standard chucks
• Quantity in set: 5 pieces
• Intended use: drilling metal

How to use

Select appropriate cutting speed and feed for the metal being drilled, clamp the workpiece securely, and center-punch the drilling point to prevent walking. Mount the 12 mm HSS bit in a standard chuck ensuring it is tightened correctly. Use cutting fluid or lubricant when drilling harder steels to reduce heat and extend tool life. Withdraw periodically to clear chips on deep holes and allow cooling as needed. After use, clean chips from the flutes and store the set in a dry place to prevent corrosion.

Usage recommendations

For best results, match drill speed and lubrication to the specific metal: higher speeds and light lubrication for softer metals like aluminum, and moderate speeds with steady cutting fluid for harder steels. Replace bits when wear or chipping affects hole quality to maintain consistent 12 mm hole diameters.