UNF/UNC 12 Punti Star Drive Flangia Bulloni Filettatura Completa/Parte Nero Alta Resistenza
UNF / UNC 12 Point Star Drive Flange Bolts Full/Part Thread Black High Tensile. Simply choose your thread Type (UNF or UNC). Thread - UNF or UNC. Thread size UNF 1/4"-28, 5/16"-24, 3/8"-24. 1/4 x 1 1/2 UNF.