Long Series Drill HSS 3.5mm

Stock Code:
2501-3.50S
Price:
$14.63

Diameter (mm)3.5
Flute Length (mm)76
Overall Length (mm)137
Pack Quantity1
Spindle Speed Stainless Steel RPM1092
Spindle Speed Tool Steel RPM1638
Spindle Speed Cast Iron RPM2184
Spindle Speed Malleable Iron RPM2457
Spindle Speed Med. Carbon Steel RPM2730
Spindle Speed Free Cutting Steel RPM3913
Spindle Speed Aluminium/Brass RPM5551
Spindle Speed Wood/Plastic RPM8281
Feed per revolution mm0.09

 

BLACK FINISH (also called blue finish) A black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life. Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.