Drill bit set c.k tools T3103 — HSS, 19 pieces, DIN 338, cylindrical shank

c.k tools HSS Drill Bit Set T3103 contains 19 high-speed steel twist drills manufactured to DIN 338 with cylindrical shanks. The set is supplied in a compact case and covers a sequence of commonly used diameters for general metalworking, maintenance and DIY. DIN 338 manufacturing tolerances provide consistent straightness and cutting geometry suitable for drilling into steel and other metals where HSS performance is required.

Advantages

The high-speed steel composition offers good wear resistance and heat tolerance for routine drilling in mild and carbon steels. DIN 338 specification ensures uniform flute profile and shank concentricity, which improves runout and hole accuracy when used in chucks. Cylindrical shanks are compatible with standard drill chucks and bench drills, and the range of sizes in one set reduces the need to change tools frequently. The set format simplifies storage and transport between job sites or workshop locations.

Suitable for

• Drilling through mild steel, alloy steel and cast iron in workshop and maintenance tasks
• General metal fabrication and fitting work
• Home DIY projects involving metal brackets, frames and fastener holes
• Use in hand-held drills, drill presses and bench drills with standard chucks

Key specifications

• Material: High-speed steel (HSS)
• Standard: Manufactured to DIN 338
• Number of pieces: 19
• Shank type: Cylindrical shank for standard chucks
• Bit type: Twist drill bits with conventional point angle suitable for metal
• Packaging: Compact storage case for organized transport

How to use

Select the appropriate drill diameter for the pilot or final hole required and secure the drill bit in the chuck ensuring firm clamping and minimal runout. Use cutting fluid or lubricant when drilling steel to reduce heat build-up and extend bit life. Start at low speed to establish the hole, then increase speed as appropriate for the bit size and material. Withdraw periodically to clear chips and maintain cutting efficiency.

Usage recommendations

For best performance and tool life, match drill speed to material thickness and diameter, use lubricant for ferrous metals, and ensure the drill press or hand drill is stable during operation. Replace worn bits to maintain hole quality and avoid excessive feed pressure that can cause bit breakage.