... , enclosed countersunk stud slotted studs, broaching expansion mounting studs, panel fastenersMaterial: 12L14, 12L15, 12L13, SUM24L, SUS303, S416 of ... , 3/8-16Finish: electroless nickel, bright nickel, trivalent blue zinc, color zinc, black zinc, black fade, black ... computers, sheet metal, control cabinet, LCD TV, home appliances, circuit boardsThe applicable panel hardness: less than HRB80, less than ...