Bolts can be divided into fully threaded bolts and partially threaded bolts. Also, there are inch thread sizes which are specified by diameter and threads per inch and metric thread sizes which are specified by diameter and pitch.
Standard: DIN, IFI, DIN, BSW, ISO
Materials: Carbon Steel, Alloy Steel, Stainless Steel, Brass etc.
Grade: CL4.8, 5.8, 6.8, 8.8, 10.9, 12.9, SAE J429 Gr.2, 5,8, ASTM A307Gr.A
Finish: plain,(blue, yellow) zinc plated, black oxide, HDG etc
Supply ability: around 1000 tons per month.