Plastite® 45 Thread-Forming Fastener
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P L A S T I T E ® 4 5 T H R E A D - F O R M I N G FA S T E N E R The Plastite® 45 fastener is designed 45° thread profile to facilitate thread-forming in less-compressable plastics while providing high resistance to strip-out and pull-out. It has smaller root and major diameters than a 48° Plastite, so it can be used in smaller bosses. tri-roundular configuration Plastite® 45 Fastener KEY ADVANTAGES • Can be used in smaller bosses than Plastite 48 fasteners • Increases product reliability • Lowers required drive torque when fastening stiffer thermoplastics FEATURES & BENEFITS Tri-roundular configuration allows displaced material to cold flow back into relief areas • Minimizes radial stress • Reduces possibility of boss failure relief areas thread-forming lobes Sizes • #2 – 3/8" (metric sizes 2 – 8); other sizes may be available upon request • Eliminates need for inserts and lock washers Head Styles • Can be used with any external or internal head designs; pan, hex washer, and flat styles standard 45° thread profile allows threads to penetrate deeply into plastic material • Generates strong mating threads Drive System • Can use any system, including TORX PLUS® Drive • Increases resistance to strip-out APPLICATIONS Engineering-grade thermoplastics (with a flexural modulus over 850,000 p.s.i.) • Allows design of thinner bosses • Resists vibration loosening • Achieves wide differentials between drive and fail torque Single lead design and narrow helix angle lowers drive torque and failure torque in thermoplastics with a flexural modulus over 850,000 p.s.i. • Creates less stress on the boss

C dimension measured with Tri-Flute Micrometer D diameter measured with Standard Micrometer DIMENSIONAL DATA – INCH SIZES Nom. Size Thread Pitch (per inch) Screw Length Tolerance under 3/4” over 3/4” (in) (in) DIMENSIONAL DATA – METRIC SIZES Nom. Size Thread Pitch Screw Length Tolerance under 20mm over 20mm (mm) (mm)

P L A S T I T E ® 4 5 T H R E A D - F O R M I N G FA S T E N E R HOLE SIZES PER PERCENTAGE OF THREAD ENGAGEMENT Inch Sizes Metric Sizes BOSS DESIGN RECOMMENDATIONS The length of engagement (L) should be 2 to 3 times the fastener’s C dimension. Testing should be done to determine optimal thread engagement on any application with a lower length of engagement. add‘l hole depth for length tolerance The nominal hole size (hØ) must be established based on the amount of thread engagement (see chart above). For optimum performance, the hole size should provide a minimum 70% thread engagement. The...