Komatsu-style premium aftermarket track-shoe bolt. Part reference 207-32-51210. Size/application: Track Shoe Bolt. Corresponding track nut reference: 207-32-51220. High-strength undercarriage fastener for the specified track-shoe assembly. Brand compatibility: Komatsu and premium aftermarket systems built to the matching Komatsu specification. Match thread, shank length and machine model before installation.