Izikrufu zentloko ye-hexagon, ezikwaziwa ngokuba zizikrufu ze-hex, izikrufu ze-hex socket, kunye nezikrufu ze-hex head cap, zinentloko enamacala amathandathu enemisonto yomatshini esele ilungiselelwe ngaphambili kwi-shank. Ngokuqhelekileyo zishunqulelwa njenge-HH okanye i-HX.
Funda ngokugqithisileyo