Mating screws
|
Truss heads are wide with a low profile rounded top. Combination drive can be used with either a flat bladed or phillips screw driver.
|
Truss heads are wide with a low profile rounded top. One way drive is installed with a flat bladed screw driver but cannot be removed without special tools. Serrated heads have angled serrations under the head to prevent loosening.
|
Button heads are rounded and low profile. Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).
| |