M4 - M12 :Class 10/ 10.9 Steel (Similar to Grade 8). M8/ 8mm x 1.25,M10/ 10mm x 1.5. M3/ 3mm x 0.5,M4/ 4mm x 0.7. M12/ 12mm x 1.75. M5/ 5mm x 0.8,M6/ 6mm x 1.0. These are Coarse (Standard) thread with Zinc (CR+3) RoHS compliant coating Alloy Steel.
eBay