HSS Step Drill Bit 6-60mm Spiral Slotted Conical Milling Cutter 12 Steps for Screwdriver Drilling on Steel Brass Wood Plastic etc

Step Drill Bits

Size: 6-60mm (12 steps: 6, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60mm).

Shank Diameter: 13mm. Step Drill Bit

Material: HSS 4241

Application: This step bit is suitable for workpieces with a hardness below 25°, such as carbon steel, sheet metal, insulation boards, PVC panels, boards, and wood. Workpiece thickness: less than 5mm.

Note: Use water cooling during drilling to extend drill bit life. Recommended drilling speed: 250-400 rpm.

Spiral fluted slot: 135 Slotted point and double flute design for self-centering and deburring. The spiral flute helps remove chips during drilling. Features: 6-60mm pitch drill bit suitable for workpieces with a hardness below 25°, such as carbon steel, sheet metal, insulation boards, PVC boards, planks, and wood. Plate thickness under 5mm. Use cooling water during drilling to extend drill bit life. Recommended drilling speed 250-400 rpm. Spiral cutting flute: 135 Double-pointed point and double flute for self-centering and deburring. The spiral flute helps clear chips during drilling. Unique step design; one drill bit can be used to open holes of different sizes. This means the equivalent of a drill set. High-speed steel tools are good for most general applications, offering a combination of hardness and toughness for wear resistance. Multifunctional: deburring, chamfering, expanding holes. Material: HSS 4241 steel. Type: Step Drill Bit. Shank Type: Round shank Ф13mm. Quantity: 1 piece. Color: Silver. Item Size: Ф 6-60mm: 12 steps (6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm). Package includes: 1 x 6-60mm HSS Step Drill Bit.