Ruko Step Drill HSS Fractional Sizes Spiral Fluted w/ Split Point No. 4 101704

Ruko Step Drill HSS Fractional Sizes Spiral Fluted w/ Split Point No. 4

The CBN ground and spiral flutes guarantee quiet running and high cutting performance. Especially the chip flow is optimized, so even long, non-breaking chips will be removed easily. The optimized chip flow protects the cutting edges and reduces built-up edges and cold weld marks. The cone makes it easier to withdraw the tool from the material.

Steel 900 N/mm

Aluminium

Brass

Plastics

Material: HSS

Shaft: 3-way clamping surface

Coating: uncoated

Shaft Diameter: 3/8 inch

Size: 4

Drilling Range: 3/16 - 7/8 inch

Tolerance: work's specification

Point Angle: 118

Cutting Direction: right hand cutting

Number of Cutting Edges: 2

Number of Steps: 12

Step Angle: 90

Length: 3 1/4 inch

Size no. 4 Drilling range: 3/16 - 1/4 - 5/16 - 3/8 - 7/16 - 1/2 - 9/16 - 5/8 - 11/16 - 3/4 - 13/16 - 7/8"