ARP stainless steel M10 x 1.25 x 55 12pt bolt: metric M10 with 1.25 mm thread pitch and 55 mm length, furnished with a 12‑point head for use with 12‑point sockets. Appropriate for assembly and fabrication where an M10 threaded fastener and a 12‑point drive are required. Overview limits itself to the bolt’s metric thread, pitch, length, and head configuration.
ARP M10 X 1.25 X 55 12pt SS bolts