DIN341 Long Taper Shank Drill Bits

A taper length drill bit is an HSS twist drill for deep-hole drilling, with longer flutes than jobber bits but shorter overall length than aircraft extension drills.

Taper shank drill bits are designed for heavy-duty, high-torque industrial applications.It is mainly used for heavy-duty drilling on machines such as drill presses and lathes. It is ideal for machining steel, cast iron, and other metals where strong holding force and precise alignment are required.

Taper length drill bits are heavy-duty cutting tools designed for environments where a standard bit cannot penetrate deep enough. At Tenyu Tool, our taper length bits are manufactured from premium HSS to ensure a Rockwell hardness of 63 HRC or higher.

The taper shank is inserted into the machine spindle or adapter sleeve. A slight push or rotation helps seat the taper firmly, allowing friction to lock the drill in place without additional clamping.

A straight drill bit (straight shank) has a uniform cylindrical shank and is typically used with handheld drills or standard chucks. It is ideal for general-purpose drilling in metal, wood, and plastic, offering versatility and easy tool changes. A tapered drill bit (taper shank, e.g., Morse taper) has a conical shank that fits directly into machine tool spindles without a chuck. This design provides a more secure connection, better alignment, and higher torque transmission, making it suitable for heavy-duty industrial drilling and larger diameter holes.Key Difference: Straight shank = flexible, general use Taper shank = stronger grip, machine use, heavy-duty applications