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Direct Screw Fixings provide a fast, economical, production line solution to fixing plastic components where the need for re-use and high assembly torque is not a major factor.

The unique patented thread forms of the PT® Screw range have been engineered to maximise the advantages of Direct Screw Fixings with forming screws for thermoplastic materials.

The adoption of these thread forms ensures that the margins between installation and stripping torque are optimised (an essential for trouble free installation) together with higher than normal re-usability – typically greater than 10 times-into thermoplastic materials, and maximum resistance to vibration.

PT® SERIES – Designed for use in thermoplastics, its key design features include a profiled thread root to assist plastic flow, a 30° flank angle to reduce boss bursting forces and an 8° pitch angle.

The PT® SCREW is a direct screw fastener for use in thermoplastics. The key design aspects include a profiled thread root to assist plastic flow, a 30° flank angle to reduce boss bursting forces and an 8° pitch angle which combine to give low installation torques with high stripping torques. For those applications not requiring the high levels of thread re-use and high clamping torque, (properties associated with threaded inserts) PT® screw offers an economical solution to plastics assembly and has distinct advantages over other direct screw fixings.