M4-1.79X14 Metric 6 Lobe Round Washer PT Alternative Fully Threaded A2 Stainless Steel (Pack Qty 2,000) BC-M414PTTRWA2

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 threadsYou may also like 10-13X2 Phillips Flat Full Body 2/3 Thread Wood Screw Black Oxide and Oil (Pack Qty 1,000) BC-1032DPFB.