Clamping kits can be used to secure material directly during machining or used in conjunction with other work holding devices. Machine clamping kits include multiple clamps, nuts, t-slotted nuts, round studs, step blocks and accessories for setting up and maintaining the clamps. They include dovetail clamping kits for use with dovetail fixtures and T-slot clamping kits for use with slotted worktables.