Bolts are used along with nuts at the other end and every so often with a washer. They are used widely in the construction, mining and mechanical industry. The most commonly used bolts are mentioned below:
Hex Bolts
Electro Galvanized-Gr 4.6, Gr 8.8
HDG - Gr 8.8, Gr 10.9
Stainless Steel - A2 (304), A4(316)
Self Finish (Black) - G r 8.8, JO.9
Brass
Copper
Socket Bolts
Self- Finish (Black) - Gr 10.9, G r 12.9 (CSK/Socket)