Statistics for Screw Head Shapes

Click here to take the quiz!

Description	Answer	% Correct
Conical, with flat outer face and tapering inner face allowing it to sink into the material. The angle of the screw is measured as the full angle of the cone.	Countersunk Head	90%
A low disc with a rounded, high outer edge with large surface area	Pan head	40%
Cylindrical with a rounded top	Button head	30%
Disc with cylindrical outer edge, height approximately half the head diameter	Cheese head	20%
Cylindrical, but with a slightly convex top surface. Height to diameter ratio is larger than cheese head.	Fillister head	10%
Lower-profile dome designed to prevent tampering	Mushroom Head	10%
A decorative screw head with a countersunk bottom and rounded top	Oval Head	10%
A dome-shaped head used for decoration.	Round head	10%
Similar to countersunk, but there is a smooth progression from the shank to the angle of the head, similar to the bell of a bugle	Bulge head	0%