BOSS perfect thread; 100% detect; For LCD TV shaft; BOSS FOR LCD TV Model: B, BS, CSS, CSOS, S ... countersunk stud slotted studs, broaching expansion mounting studs, panel fastenersMaterial: 12L14, 12L15, 12L13, SUM24L, SUS303, ... M1.0-M10,4-40,6-32,8-32,10-32, 1/4-20,2-56,3 ... , sheet metal, control cabinet, LCD TV, home appliances, circuit boardsThe applicable panel hardness: less than HRB80, less ...