Mechanic's length drill with tri-flat shank, diameter 0.3281" (21/64) with an overall length of 4.1/16" and flute length of 2.9/16" according to ANSI standard with 135° split point, HSS with steam tempered + bronze finish for 4xD drilling without pecking in steel and cast iron
Applications:
P - Steel and cast steel(steels with alloy content ? 10% and a hardness of < 45HRC) - Primary use
M - Stainless steel(corrosion resistant steels with ? 11% chromium content) - Possible use
K - Cast Iron(castings of iron and carbon alloys with > 2% carbon content) - Primary use
N - Non-ferrous metals(metals including alloys without an appreciable amount of iron) - Possible use
For additional details please check the Manufacturer's site:
