The stainless steel rod is A2 grade.This is a 5mm diameter rod 135mm long. Thread 5mm x 0.8mm, length 12mm.It is a H7 toleranceIt is threaded and machined to put on a chamfer on one end.Then it is polished in a vibration polisher.There can be no dents or nicks on the surface caused by handling or during later transit. No burrs. It must slide smoothly through the brass guide.You have to be sure the steel bar is round before you start. Some bar will measure round but can be slightly tri-oval.Country:India
