Commonly used screw specification table------Chinese people spiral silk screen jis women's hairdo with hair in a spiral on top or behind the head screw head size table----302hq.com jis sunk screw head size table----302hq.com jis wood screw head size table…

Common difference When makes the components, to enable the components to have the interchangeability, the request components' size in a reasonable scope, has stipulated from the extreme dimension. After making the actual size, should in the stipulation bigges…

Metric system fine thread box thread Metric system coarse thread box thread Specification Standard diameter 6H precision Specification Standard diameter 6H precision Dmax Dmin Dmax Dmin M2.5*0.35 2.15 2.184 2.121 M1.4*0.3 1…

When the thread accuracy requirement is high, besides labels the thread code number, but should also label the thread tolerance tolerance zone code number and the thread turns on lathe gathers the length. The thread mark's labelling form is: The thread co…

The thread precision is and turns on lathe by the thread tolerance zone gathers the weight thread quality overall target which the length is composed together. The thread tolerance zone code number with goes against the diameter tolerance zone code number inc…

Type Tooth enlarged drawing Characteristic code number Labelling demonstration Use and explanation Plain thread Coarse thread M When the most commonly used one kind of joint thread, the diameter is the same, fi…

Thread: On the column or the circular cone surface, has the stipulation tooth shape continual bulge which forms along the spiral line. Box thread: Thread which forms in the column or the circular cone internal surface. External screw thread: Thread which fo…