Jobber length drill with taper shank, diameter 0.3125" (5/16) with an overall length of 6.3/8" and flute length of 3.1/8" according to ANSI standard with 118° point angle, HSS with steam tempered finish for 4xD drilling without pecking in steel
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
S - High-temperature alloys(superalloys with high temperature stength and corrosion resistant surpassing that of stainless steel) - Possible use
For additional details please check the Manufacturer's site:
