5 Easy Facts About types of screw heads Described
The tri-angle or TA, the screw head is very similar to the TP3 screw head; even so, the edges on the triangle are straight in place of lobular. This screw head style can deter use of units’ interior mechanisms, so it's got some security features. In real use, the fastener drivers could be interchangeable, but just before exerting force, each oug