Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· Counter Bores - Allows the head of cap screws to be sunk beneath a surface
· Spot Face - Allows the head of a bolt to be sunk beneath the surface. This is basically a shallow counter bore.
· Counter Sink - Allows counter sunk head screws to be sunk beneath a surface.
· Center Drilling - Allows parts to be mounted between centers, on lathes typically.
· Tapers Holes - these holes can be cut using reamers.
· Threaded Holes - Taps can be used to add threads to holes
· High tolerance finishes for holes can be made with boring or reaming.