Bordo 18.5mm x 1/2” Reduced Shank Drill Bit - Carded

118° notched point 30° helix
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 edge

Part No. 2654-18.50
Reference No. D1881850
Barcode 9326518004134
Diameter (mm) 18.5
Flute Length (mm) 89
Overall Length (mm) 152
Pack Quantity 1
Spindle Speed Stainless Steel RPM 207
Spindle Speed Tool Steel RPM 310
Spindle Speed Cast Iron RPM 413
Spindle Speed Malleable Iron RPM 465
Spindle Speed Med. Carbon Steel RPM 516
Spindle Speed Free Cutting Steel RPM 740
Spindle Speed Aluminium/Brass RPM 1050
Spindle Speed Wood/Plastic RPM 1567
Feed per revolution mm 0.34