Socket Head Bolts Our company offers a wide range of Socket Head Bolts, which are in demand in the Automobile and other Allied Sectors for their top quality. We use High Tensile Steel as raw material to make these products durable and corrosion resistant. Our Socket Head Bolts are available different length ranges and grade specifications to suit the variegated needs of the clients. Specifications: Dia Range : M6 to M42 Length Range : 20mm to 1000mm Grade : 8. 8, 10. 9, 12.