Tap Bolts are usually hex head bolts threaded up to the head, with a machined point and a fully threaded shank.
Usually of low carbon or grade 5 steel, tap bolts are used in a drilled and tapped hole that is threaded over its full length.
Tap bolts are also used instead of a stud and a nut, to be screwed into some fixed part, rather than passing through the part
and receiving a nut.
Tap Bolts have tolerances similar to those of hex cap screws, and essentially serve as Fully-threaded Hex Cap Screws.
InStock Fasteners offers tap bolts plain or with a zinc finish.