Reduced Shank Drill 16.5mm 1/2"

Stock Code:
2654-16.50
Price:
$90.39

Diameter (mm)16.5
Flute Length (mm)89
Overall Length (mm)152
Pack Quantity1
Spindle Speed Stainless Steel RPM232
Spindle Speed Tool Steel RPM347
Spindle Speed Cast Iron RPM463
Spindle Speed Malleable Iron RPM521
Spindle Speed Med. Carbon Steel RPM579
Spindle Speed Free Cutting Steel RPM830
Spindle Speed Aluminium/Brass RPM1177
Spindle Speed Wood/Plastic RPM1757
Feed per revolution mm0.31

 

BORDO REDUCED SHANK HSS DRILLS

118° notched point 30° helix

DRILL BIT SURFACE TREATMENT
Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface aids chip flow and heat dissipation. The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.