... HS26, HS32 series T bolt, turnout, hex bolt, flange bolt, subway Bolts. Nut: nylon nut, lex nut, square nut, heavy and normal. 2) Specification: 4.6 ... / clamp bolt / track bolt 1) Type: hex head, square head, flange head used DIN, BS, and AREA standard 2) Specification: M24 ... Screw spike/sleeper screw/ dog spikes 1) Type: Ss series square spikes remain Ss5; ss8; ss25; ss36, all kinds available ...