H320-4 M6 6H
H320-4 M6x0.75 6H
H320-4 M8 6H
H320-4 M8x0.75 6H
H320-4 M8x1 6H
H320-4 UNC1/4-20 2B
H320-4 UNC10-24 2B
H320-4 UNC2-56 2B
H320-4 UNC3/8-16 2B
H320-4 UNC4-40 2B