Can this tolerance of metric countersunk head screw dimensions be achieved?

When Mr. Yang searched the screw manufacturer on the Internet and saw the information of Shi Shi Tong, he sent an email and asked us how many metric countersunk head screw dimensions can be made.

Mr. Yang wants M8*720 long screws, M4*13 shoulder screws, M1*5 small screws. These metric countersunk head screw dimensions are not the same size. But we can all do it. Then Mr. Yang sent his drawings over and asked if we could achieve the tolerances on the drawings.

The tolerances on Mr. Yang’s drawings are very strict, especially the tolerance of the M4*13 shoulder screws, which is basically to be controlled on the lathe. And our production process is mainly cold, and turning can also be done. Then, I asked Mr. Yang if he could accept the tolerances of the step screws produced by the cold heading process, and gave the tolerance drawings of Mr. Yang’s cold heading production. Mr. Yang said that let us give him the price of these two crafts, he will decide again. After we gave Mr. Yang the price of several metric countersunk head screw dimensions, Mr. Yang said that he still had to turn the tolerances, no need to be cold.

If you want to customized metric countersunk head screw dimensions, please send an email: annie.li@szsst88.com