4x10mm Step Screw, spare screw set for M-Chassis

This spare screw set provides 5 matching 4x10 mm step screws for compatible model chassis work, with a compact format that suits replacement, maintenance and rebuild tasks. The stepped design combines a threaded section, a cylindrical shoulder and a domed head, so one fastener can secure a part while also maintaining the spacing that a plain screw may not provide. The data names TA02, TA03 and M-Chassis compatibility, giving a direct reference for parts matching during service work. In a workshop tray or spares box, the 4x10 mm size is easy to identify when a build calls for the same specification. The 5-piece quantity supports targeted replacement rather than forcing a full hardware change across a chassis. The metal construction fits the role of a small mechanical fastening part where repeated fitting and removal are part of normal model upkeep. This screw pack suits bench repairs, scheduled maintenance and the final stages of a rebuild when the correct shoulder screw is needed to complete a mounting point. It also works as a useful reserve for keeping compatible TA02, TA03 or M-Chassis models ready for the next running session.