21 Piece HSS Black Oxide Stub (Screw Machine) Split Point Drill Bit Set, D/ASP, 1/16" - 3/8" Tekton Part Number T/A57230TN

Part Number T/A57230TN

and the reducer adapts 3/8 inch drive tools to 1/4 inch sockets

Internal Diameter: 5/8"-18

Part Number: BIT-DEWSFC5/8-100

Part Number: BIT-DWTMHX18X1

21 Piece HSS Black Oxide Stub (Screw Machine) Split Point Drill Bit Set, D/ASP, 1/16" - 3/8" Tekton Part Number T/A57230TNProduct Description Screw machine drills (also know as stub or stubby drills) are manufactured to National Aerospace Standard 907. The 135 degree split point is self centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in a broad range of materials. Screw machine drills are popular in the automotive and construction industries. They are often used in screw machine setup where spindle clearance