The most-used M5 in the machine: every external bracket, every bin bracket, every interface rib, every lazy Susan extrusion mount.
Designed to self-tap into printed plastic wherever it lands in an external bracket or the upper fixed section — no nut and no insert there.
This count is summed from the machine assembly tree.
Three parts that bolt together into one external bracket. 6 per distribution frame (per layer), plus a set per interface. The cover clips on and takes no screws.
All four M5 × 16 mm socket/button head are designed to self-tap: 2 hold the side to the bottom vertical, 2 hold the assembly to the vertical extrusion. No nuts and no inserts anywhere in this bracket.
The interface's fixed upper section: the upper-fixed-section plate, its ribs (5 plain + 1 with the limit-switch gap), and the big spacer. 1 per interface. Each rib takes 2 × M5 × 16 mm socket/button head into the plate; the screw that ties it to its bracket's extrusion belongs to the interface above.
Both of each rib's M5 × 16 mm socket/button head thread straight into the printed upper fixed section — no insert, no nut.
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