IMPA: 630451

Morse Taper Shank Long Twist Drills (IMPA 630451)

Our Morse taper shank long twist drills are engineered for demanding drilling tasks in marine and industrial environments. The long series design provides extended reach for deep-hole drilling, while the Morse taper shank ensures a secure, self-locking fit in standard drill press, lathe, and milling machine spindles. Made from high-speed steel, these twist drills deliver excellent wear resistance and cutting performance on ferrous and non-ferrous metals.

Ideal for shipyards, offshore platforms, and onboard repair workshops, these drills are precision-ground with a 118° point angle for accurate starting and reduced thrust. The polished flute surfaces promote efficient chip evacuation, preventing clogging and overheating during extended use. Available in a wide range of diameters and Morse taper sizes to suit various applications, they are a reliable choice for marine engineers and metalworkers.

Key Features

Technical Specifications

IMPA Code630451
Product TypeMorse Taper Shank Long Twist Drill
MaterialHigh-Speed Steel (HSS)
Point Angle118°
Shank TypeMorse Taper (MT1, MT2, MT3, MT4, MT5)
Diameter Range3 mm – 50 mm
Overall Length100 mm – 400 mm
Flute Length75 mm – 300 mm
FinishBright, precision ground
ApplicationShipbuilding, marine repair, offshore drilling, general metalworking

Frequently Asked Questions

What is a Morse taper shank?

A Morse taper shank is a self-locking taper that secures the drill into the spindle of a machine tool. It provides high torque transmission and accurate alignment, making it essential for heavy drilling applications.

Are these long twist drills suitable for marine use?

Yes. They are made from high-speed steel and precision-ground to handle the tough materials encountered in marine engineering, including steel, stainless steel, and aluminum. The long series design is perfect for deep-hole drilling in ship hulls and machinery.

What sizes are available?

We stock a range of diameters from 3 mm to 50 mm, with Morse taper sizes MT1 to MT5. The overall length varies from 100 mm to 400 mm, depending on the diameter and shank size.

Can these drills be used in a hand drill?

They are designed for machines with a Morse taper socket. You can use them with a hand drill by fitting a Morse taper adapter into a standard drill chuck, but for optimal performance, a drill press or lathe is recommended.

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