metric
square
buttress
acme
cotter joint
bolted joint
kunckle joint
universal coupling
one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
a slot is cut partly in middle of nut and then slot reduced by tightening screw
a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin split and bent in reverse direction at the other end
on both the sides
on one side only
on none of the sides
may be provided anywhere
provide cooling action
lubricate the dies
help remove chips
all of the above
