Self-tapping fastener for plastics (thermoplastic materials) The EJOT DELTA PT® has been developed from many years of practice in the field of direct fastening into thermoplastic materials. Several years of research have led to the conclusion that the clamp load of thermoplastic joints can be calculated (VDI 2230). A prognosis programme and the DELTA PT® srew with it‘s optimised thread geometry were developed. The result is a tough fastener that guarantees safety and reliability even in extreme applications. EJOT DELTA PT® for selftapping in thermoplastic materials Advantages of the EJOT PT® screw: l Minimal radial tension due to optimized flank angle l High clamp loads l High tensile and torsion strength l Increased cycle stress stability l High strength under vibration ® l DELTA PT prognosis programme allows a clamp load oriented engineering l Long lifetime of the joint l Standard material through hardened steel [PT10] Boss design The most favourable hole diameter has in most cases proven to be: dh = 0,8 x d1 ± tolerance of screwdiameter (see tolerance brochure page 16) For higher filled materials or materials with a bigger strength the hole diameter can be increased up to dh = 0,88 x d1. Application sample into manyfold

Chrom VI free surfaces: • zinc clear / blue passivated • zinc clear / blue passivated with EJOSEAL (240h resistance to Zn-corrosion) • zinc clear / thick film passivation • ZnFe or ZnNi / transparent passivated (with or without black top coats) • ZnNi, black passivated • zinc flake coatings (depending on 0) (e.g. Delta Protekt) Upper line = minimal length Length > 60 mm with partial thread only (countersunk head length Lmin = L + 2 mm) (partial thread length 4 x d1) Lower line = maximal length Special geometries upon request! 08.09 All technical data may be subject to technical improvements....