BOSS perfect thread; 100% detect; For LCD TV shaft; BOSS FOR LCD TV Model: B, BS, CSS, CSOS, S, SS ... fastening nut, enclosed countersunk stud slotted studs, broaching expansion mounting studs, panel fastenersMaterial: 12L14, 12L15, 12L13, SUM24L, SUS303 ... machineInvolving areas: desktop computers, sheet metal, control cabinet, LCD TV, home appliances, circuit boardsThe applicable panel hardness: less ...