Here's a BOM for vanilla i3 single plate that I've been using for a few years now. The BOM has been used on over 1000 builds.
12 x M10-1.50 nut, zinc
12 x M10 flat washer, zinc
34 x M8-1.25 nut, zinc
34 x M8 flat washer, zinc
4 x M5-0.8 nut, zinc
50 x M3-0.5 nut, zinc
50 x M3 flat washer, zinc
12 x M3-0.5 nyloc nut, zinc
24 x M3-0.5 x 10mm socket head cap screw, black oxide
10 x M3-0.5 x 15mm socket head cap screw, black oxide
16 x M3-0.5 x 20mm socket head cap screw, black oxide
5 x M3-0.5 x 35mm socket head cap screw, black oxide
3 x M3-0.5 x 40mm socket head cap screw, black oxide
3 x M3-0.5 x 8mm socket head set screw, black oxide
1 x M8-1.25 x 20mm socket head set screw, black oxide
Dave
Roaddog Labs Ltd
Las Vegas USA
roaddoglabs.io