Description:

0.312 inches shank diameter, straight round shank style, 4.500 inches overall length, general purpose cutting end style, 0.3125 inches nominal cutting diameter.

Special Features:

Jobbers lg; fractional size 5/16

Properties:

An end cutting tool having two or more cutting edges, and having helical flutes or grooves adjacent thereto for the admission of coolant and the ejection of cuttings or chips. It is used for drilling holes in various materials. Excludes drill, masonry (as modified); and drill,twist, bone. See also drill, pivot, jeweler's and drill, hardened steel, carbide tipped.