Please note  : Picture just as a reference.the actual delivered goods shall prevail !

Note : please check the choice carefully !

Type : Trapezoidal nut

Material : Brass

Type 1 : Pitch : 1mm Lead : 1mm(single-head,nut turn one circle,screw forward 1mm)

Type 2 : Pitch : 2mm Lead : 2mm(single-head,nut turn one circle,screw forward 2mm)

Type 3 : Pitch : 2mm Lead : 4mm(double-head,nut turn one circle,screw forward 4mm)

Type 4 : Pitch : 2mm Lead : 8mm(four-head,nut turn one circle,screw forward 8mm)