Universal hexalobular (6 Lobe) socket flat countersunk head wood screws partially threaded, cutting ribs under the head, friction thread, end mill cutter — 8 x 160 / 80 (X40)

Bossard · Direct Assembly Screws for Wood. d1: 8 | L: 160 | d2 max.: 15 | k max.: 7,4 | Hexalobular socket: X40 | b: 80