STC bolts and nuts

Bolts and nuts are classified according to their hardness. Generally, the bolts and nuts available in Iran are of grade 8.8, which is not suitable for tractor parts and causes a lot of problems and financial losses for the farmer. Realizing this problem, the R&D team of "Shams Group Company", after conducting technical investigations, offered bolts and nuts under the STC brand and with grade 10.9, which is the best choice for tractors.