M3-1.34X30 Metric 6 Lobe Round Washer PT Alternative Fully Threaded A2 Stainless Steel (Pack Qty 2,000) BC-M330PTTRWA2

A spaced thread fastener with a dome-shaped head and an integrally-formed washer; a recess that accommodates a 6-lobed driver; and a flat bearing surface that is 90° to the screw's shank When comparted to a thread rolling screw, the threads are wider and have a sharper angle. Furthermore, the core of the shank has a reduced diameter between each consecutive set of threads. The point opposite is the head is blunt Designed to form its own thread in thermoplastic materials. The 30° thread angle reduces the outward expansion of the material being displaced. The recessed design of the thread root enables more material flow into the area between threads