Special Features:

Fastener size: 3/16 inch; retainer size: ; class of fit: class iii. Twist drills are provided for either or oversize starting holes for each fsn. These are sized such that about 1/64 inch of material will be removed by the starting hole reamer to achieve the starting hole size.

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.