| 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 | 93%
|
| A low disc with a rounded, high outer edge with large surface area | Pan head | 43%
|
| Cylindrical with a rounded top | Button head | 36%
|
| Disc with cylindrical outer edge, height approximately half the head diameter | Cheese head | 14%
|
| Lower-profile dome designed to prevent tampering | Mushroom Head | 14%
|
| Cylindrical, but with a slightly convex top surface. Height to diameter ratio is larger than cheese head. | Fillister head | 7%
|
| A decorative screw head with a countersunk bottom and rounded top | Oval Head | 7%
|
| A dome-shaped head used for decoration. | Round head | 7%
|
| 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%
|