अब BOLT का SIZE देखकर spinner and Allen key का SIZE पता करे [part-2]

Amok bolt me short formula not working.1. hexagonal bolt me amok bolt ki short formula
M10=10+5+2=17
M16=16+8=24
M18=18+9=27
M20=20+10=30
And
M3=3+1+1=5
M5=5+2+1=8
M7=7+3+1=11
M9=9+4+1=14
अब BOLT का SIZE देखकर spinner and Allen key का SIZE पता करे (part-2)
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• Types of bolt [part-1]...