Threads and Points

Pro-Twist™ Thread Types and Points

Screw Threads and Points

Type “A” Sharp Point forming screw used in metal .015 to .050 thick. Pro-Twist™ are tested to pierce 20 gauge steel or less	Self Piercing with Twin Leading Threads Self-piercing needlepoint penetrates sheet metal from .0209 to .0358. Twin lead threads assure fast action and reduce driving torque and strip-out problems	HI-LO Threads Thread forming screw used in light gauge steel for special applications requiring higher strip-out resistance	Self-Drilling Special designed point used to pre-drill and tap a hole in a one step application. Used in thicker gauge materials that would require a pre-drilled hole

Pilot Point Used for attaching ¾” to 1-1/8” materials to thin gauge steel. The leading blank shank eliminates thread engagement which is the primary cause of jacking	Self Drilling with Wings Used for attaching 5/8 to 2-1/4 materials to thick gauge steel. The wings eliminate the need to pre-drill the attached material	Spade Point Primarily used to fasten cement board to wood or light gauge steel. The spade point penetrates the board without cracking	Type 17 Point Used for penetrating harder woods, eliminates splitting during installation. Can also be used in light gauge applications