1pc Round type 5/8-18 Flowdrill Thermal Friction Hot melt short Drill bit 15.2mm. Classification of hot melt drill bits. According to the requirements of the workpiece surface, Fdrill hot melt drill is divided into "round type (frictiondrill guichenoti type frictiondrill)" and flat type (frictiondrill row flat frictiondrill). Round type frictiondrill (standard type frictiondrill): frictiondrill penetrate the workpiece while drawing the bushing to form a convex ring. The surface of the boss, suitable for thread sealing or nut washer.Flat type frictiondrill (designated flat frictiondrill): the middle part of the drill grinding step melt cutter blade, and the hot melt drilling liner to penetrate the workpiece drawing to form a convex surface of the workpiece (ring cut milling and chamfer), make the surface smooth. M3, M4, M5, M6, M8, M10, M12 , M14 Thermal Friction Drill bit Select. Package: 1 x Thermal Friction Drill Bit. The item "1pcRound type 5/8-18 Flowdrill Thermal Friction Hot melt short Drill bit 15.2mm" is in sale since Wednesday, September 18, 2019. This item is in the category "Home & Garden\Tools & Workshop Equipment\Other Tools & Workshop Equipment". The seller is "beliefing" and is located in Nanjing Jiangsu . This item can be shipped worldwide.