Hexalobular (6 Lobe) socket flat countersunk head thread forming screws ~type M, metric thread — M5 x 8 / X25

Bossard · Thread Forming and Tapping Screws for Metal. d1: M5 | L: 8 | d2 max.: 9,2 | k max.: 2,5 | Hexalobular socket: X25 | t max.: 1,5 | A~: 4,5