Product Name: hexagon screw with inside and outside thread Advantages:The screws is not only practical,but also cheap.

surface treatment:passivatingsize:H22*14*inside thread1/4*outside thread3/8produce process:CNC lathe machineproduct introduce:It was made by the CNC lathe machine in two times,the first time we produce the outside thread 3/8 and other places,and the second time we produce the inside thread 1/4,and all of the thread can gauging by the Calibration For Ring Gage, Athread Gage.

1)high quality, and reasonable price,the color and size can do as customers' requestswe can do package as customers' requests(carbon,pallet and export package)

2)promptly deliery

3) advanced  measuring & testing equipment: projecting apparatus, roughness tester,hardness tester, concentricity tester etc

4) Parts are produced according to customers' drawing or sample

5)Main equipment: CNC lathe, automatic lathe, hand lathe grinder, thread rollingmachine, tapping drilling machine etc

we will bring our customers the best price. we are convinced that your choice will be your fortune in the future.

Supply the hexagon screw with inside and outside thread