Trilobular® configuration allows displaced material to cold
flow back into relief areas
• Minimizes radial stress
• Reduces possibility of boss failure
• Eliminates need for inserts and
lock washers
• Allows design of thinner bosses
48° thread profile allows threads to penetrate deeply into
plastic material
• Generates strong mating threads
• Resists vibration loosening
• Reduces probability of strip-out and pull-out
Twin lead design and steep helix angle provides greater
shear area in softer plastics (with a flexural modulus up
to 850,000 p.s.i.)
• Increases holding power
• Allows faster seating of fastener
Single lead design and narrow helix angle lowers drive
torque and failure torque in stiffer thermoplastics (with
flexural modulus between 850,000 and 1,300,000 p.s.i.)
• Creates less stress on the boss
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