Sada vrtákov Metabo HSS Cobalt 19 kusov DIN 338, valcová stopka

Metabo HSS Cobalt 19 pcs DIN 338 drill bit set with cylindrical shanks is designed for drilling through steel and other demanding materials. The set contains 19 high-speed steel cobalt alloy bits manufactured to DIN 338 dimensions, providing a balance of hardness and toughness for workshop and maintenance applications. Cylindrical shanks ensure compatibility with standard chucks and holders used in handheld and bench drills.

Advantages

HSS cobalt composition increases heat resistance and edge retention compared with standard high-speed steel, extending tool life during high-speed or prolonged drilling. Compliance with DIN 338 ensures consistent geometry and reliable centre-point accuracy for straight holes. The cylindrical shank design provides secure clamping in a wide range of drill chucks and reduces runout. The variety of sizes included covers common metalworking needs, minimizing the need to change tools frequently.

Suitable for

• Drilling mild and alloyed steels
• Workshop maintenance and repair tasks
• Use in handheld and bench drilling machines
• Preparing holes for tapping and fastening

Key specifications

• Material: High-speed steel with cobalt alloy
• Standards: DIN 338 drilling geometry
• Shank type: Cylindrical shanks suitable for standard chucks
• Quantity: 19 drill bits in a set
• Application: Designed for metalworking and maintenance drilling

How to use

Select the drill bit size appropriate for the hole diameter required and clamp the cylindrical shank securely in the drill chuck, ensuring minimal runout. Use cutting fluid or coolant when drilling ferrous materials to reduce heat and extend bit life. Start at low speed to establish the centre and then increase speed according to material and bit diameter, applying steady feed pressure. Withdraw the bit periodically for chip clearance when drilling deep holes.

Recommendations

Use appropriate personal protective equipment such as safety glasses and gloves. Match drilling speed and feed to the material and bit size; larger diameters and harder alloys require lower speeds and higher torque. Store bits in their case to protect cutting edges and verify bits for wear or chipping before reuse to maintain drilling accuracy and safety.