Twist drill bit Irwin 10502568, diameter 1.3 cm, single piece

Irwin 10502568 is a single-piece twist drill bit with a diameter of 1.3 cm (13 mm) made for general-purpose drilling in metal, wood and plastic depending on the chosen feed and machine. Manufactured in accordance with DIN 338 standards, this HSS cobalt bit contains 5% cobalt to improve heat and abrasion resistance, and features a heavy-duty web and a 135° split point that reduces bit walk and starts drilling more quickly. The construction suits demanding repair, construction and DIY tasks where a reliable 13 mm hole is required.

Advantages

The HSS cobalt composition with 5% cobalt enhances hardness at elevated temperatures and extends tool life during heavy-duty drilling. The heavy-duty web construction increases strength and reduces breakage risk under high torque. The 135° split point reduces wandering on the workpiece and improves centring without the need for pilot holes in many materials. Manufactured to DIN 338 tolerances, the bit offers consistent diameter and straightness for repeatable, accurate holes.

Suitable for

• Drilling holes of 13 mm diameter in mild and hardened steels
• Metal fabrication and repair tasks requiring abrasion-resistant bits
• Workshop and on-site construction where a single robust 13 mm drill is needed
• Wood and plastic drilling when a general-purpose 13 mm hole is required

Key specifications

• Type: single-piece twist drill bit
• Material: high-speed steel (HSS) with 5% cobalt
• Diameter: 13 mm
• Point angle: 135° split point
• Construction: heavy-duty web for increased strength
• Standards: manufactured to DIN 338

How to use

Select an appropriate drill speed and feed for the workpiece material—use lower speeds for hardened steel and higher speeds for wood and plastics. Secure the workpiece and, if necessary, clamp or use a centre punch to help starting position. Fit the 13 mm twist drill into a compatible chuck, ensure correct axial alignment, apply steady pressure and allow the bit to cut without excessive force. Withdraw periodically to clear chips when drilling deep holes and use cutting fluid on metal to reduce heat and extend bit life.

Usage recommendations

For best results when drilling hardened or abrasive alloys, use suitable cutting fluid, moderate feed rates and reduced speeds to limit heat build-up. Inspect the bit for wear or dulling before use and replace when edges become rounded to maintain hole quality and reduce breakage risk.