Categories:Type A,type AB,type BT,type2A and type2B with various kinds of head types and drive types. Product name: self tapping screw seriesDiameter: 2.9mm, 3.5mm, 4.2mm, 4.8mm, 5.5mm, 6.3mm Length: From 13mm to 100mm.Application:Mainly used in housed electric appliances,assembly of electronic products,auto fittings.Self-tapping screws provide an economical means of assembling components. Self- ...