Description:

1. Material: Nylon plastic. M6 head thickness 4.24-3.76 hexagonal across flats 10.0-9.65. M8 head thickness 5.54-5.26 hexagonal opposite side 13.0-12.77. M10 head thickness 6.69-6.38 hexagonal across flats 17.0-16.72 M12 head thickness 7.79-7.41 hexagonal opposite side 19.0-18.58.