Drill bit for metal Smart HSS cylindrical 11.5 mm set of 5 (MPN 11-115)

Smart cylindrical HSS drill bit set, 11.5 mm diameter, five pieces. These high-speed steel (HSS) bits are designed for drilling metal and other hard materials that require the wear resistance and cutting performance of HSS. Each bit has a straight cylindrical shank to fit standard chucks of hand drills and drill presses, providing stable rotation and straightforward clamping for routine fabrication, maintenance and workshop tasks that need accurate circular holes in metal components.

Advantages

The set offers consistent diameter across five identical 11.5 mm bits, reducing downtime when a replacement is needed. High-speed steel construction provides a balance of hardness and toughness for cutting through steel, cast iron and some non-ferrous metals. The cylindrical shank ensures compatibility with a wide range of drills and allows secure mounting in standard chucks. Uniform geometry supports predictable chip evacuation and repeatable hole quality for general workshop and maintenance use.

Suitable for

• Drilling holes in steel and other metals
• Routine workshop fabrication and metalworking
• Repair and maintenance tasks requiring precise metal holes
• Use in hand drills and drill presses with cylindrical chucks
• Small production runs where multiple identical bits are convenient

Key specifications

• Drill type: twist drill bit for metal
• Material: high-speed steel (HSS)
• Shank type: cylindrical straight shank
• Diameter: 11.5 mm
• Quantity in set: 5 pieces
• Typical compatibility: standard 3-jaw chucks and drill press chucks that accept cylindrical shanks

How to use

Select an appropriately rated hand drill or drill press and secure the cylindrical shank in the chuck, tightening evenly to avoid slippage. Mark and clamp the workpiece to prevent movement, and, when drilling metal, use center-punching to locate the starting point. Apply cutting fluid or lubricant suitable for metal drilling to reduce heat and improve chip flow. Begin at low speed to establish the hole, then increase speed within the tool and bit manufacturer's recommended working range. Use steady feed pressure and withdraw occasionally to clear chips on deeper holes. After drilling, deburr the hole edges as needed.

Использование и уход

Store the drill bits in a dry place, protect cutting edges from impact, and inspect periodically for wear. Replace bits that show blunt cutting lips or excessive chipping to maintain hole quality and reduce risk of breakage.