HSS Spiral Flute Step Drill

Material

HSS 4241, HSS 4341, HSS 9341, M2, M35, M42

Surface Treatment

Bright finished, Tin-coated, Zr-coated, Black-oxidized 

Shank

Round Shank, Three-Side Shank, Hex Shank, Hex Shank With a Step  

Flute

Straight Flute, Spiral Flute 

Process

Fully Ground

 Application

Aluminum, Iron, Carbon Steel, Stainless steel, Plastic, etc. HSS4241        2mm Aluminum, Iron, 5mm Plastic

HSS6542/M2       5mm Aluminum, Iron, Carbon Steel, Plastic
HSSCO/M35       5mm Aluminum, Iron, Carbon Steel, Stainless Steel, Plastic

Features:
The ladder of its unique structure, a bit can open a variety of specifications of aperture.
Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.
Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible.
The use of tools: drill, bench drill. Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM.