... fastening nut, enclosed countersunk stud slotted studs, broaching expansion mounting studs, panel fastenersMaterial: 12L14, 12L15, 12L13, SUM24L ... 16Finish: electroless nickel, bright nickel, trivalent blue zinc, color zinc, black zinc, black fade, black anodized, ... desktop computers, sheet metal, control cabinet, LCD TV, home appliances, circuit boardsThe applicable panel hardness: ...