Machine screws, Round

Slotted round head

Round heads are domed and look like half of a sphere. Slotted drive has a simple slot for a flat bladed screw driver.

Combo round head

Round heads are domed and look like half of a sphere. Combination drive can be used with either a flat bladed or Phillips screw driver.

One way round head

Round heads are domed and look like half of a sphere. One way drive is installed with a flat bladed screw driver but cannot be removed without special tools.