Lock Bolts
M2/M2.5*L+6
M3/M4*L+6
M5/M6*L+8
M8*L+10
They are made of carbon steel, but the surface color is different!
Size: thread diameter * stud length + external tooth length
For example: M3*6+6
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Dimensions : M3*8
Drive Style : External Hex
Model Number : M2 M2.5 M3 M4M5 M6 M8
Screw Type : Machine Screws
Material : Carbon Steel