Izikrufu ze-Allen ziyinxalenye yoqhagamshelo oluqhelekileyo lomatshini elidla ngokusetyenziselwa ukulungisa nokudibanisa izinto ezifana nentsimbi, iplastiki, iinkuni, njl.njl. Inentloko yangaphakathi ene-hexagonal enokuthi ijikelezwe nge-allen ehambelanayo okanye i-wrench barrel kwaye ibonelela ngokugqithiswa kwetorque enkulu. umthamo. Izikrufu ze-hexagon zesokhethi zenziwe ngentsimbi ekumgangatho ophezulu we-alloy okanye intsimbi engenasici, enokumelana ne-corrosion elungileyo kunye namandla okuqina, kwaye ifanelekile kwiindawo ezahlukeneyo kunye neemeko zokusebenza.