... add:But according to the clients sample production .TRACK BOLT & NUT listPART no. PART NAME SIZE 2A3223 TRACK BOLT 1/2 ... , komatsu, hitachi, kobelco, daewoo, kato, hyundai, samsung, sumitomo, mitsubishi, etc.Specifications Size from: M5 - M42 Length: 10mm-200mm Hexagon head bolt ... .6 ASME B18.2.3.7Product name: Track bolt and nut Model: As per machine Material: 40Cr Processing: Forging Size: M12 ...