Hexalobular (6 Lobe) socket pan head tapping screws with cone end type C — ST 4,8 x 13 / X25

Bossard · Thread Forming and Tapping Screws for Metal. d1: ST 4,8 | L: 13 | d2 max.: 9,5 | k max.: 3,7 | Hexalobular socket: X25 | t max.: 2,03 | A~: 4,5