Tec-Spiral

Two Flute HSS Hole Enlarging Step Drills

·Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
·Two flute remove chips and help pull the bit through material for faster cutting
·Laser each hole size markings for quick size identification
·3 Types shank are available :Cylindrical shank,108 flat shank,hexagon shank

Variants

Flute Type

Step Range

Description
Advantages
Applications

◆ Made by high-performance HSS, High wear resistance and long tool life;
◆ Manufactured by advanced CNC machine. High consistency and quality assurance;
◆ 118° Split point DIN1412C, good centring, little pressure required;
◆ CBN fully ground ensure better and sharper cutting edges;
◆ Modified cutting angle guarantee smooth running and positive cut;
◆ Grooves oppened wide to allow fast and easy chip removal;
◆ Each step/cone has constant radially adjusted relief and axially relief;
◆ A starter hole of the smallest step/cone diameter will speed the drilling process;
◆ Centered and drilled in one operation;
◆ Applicable for Tube and Sheets and thin materials such as steel, non-ferrous and light metals, plastic, wood, etc.

·Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
·118ºSplit point starts hole cuts quickly and prevents drifting when pressure is added

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