This M2 x 40 socket button screw is specified for Mini 4WD use where a longer M2 fastener is required for chassis, body mount, or bracket attachment. The description focuses on the form factor: socket-drive button head and 40 mm nominal length. The item is intended as a direct spare for assemblies that accept M2 threaded fasteners with that length.
Compatibility depends on the receiving thread and clearance in the chassis or accessory being used. Measure the standoff and confirm the threaded hole depth before substitution. Use a matching hex key sized for M2 socket heads to avoid rounding the drive.
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