Simmonds Marshall Limited is a holding company, which is engaged in providing nylon self locking nuts (industrial fasteners). The Company's main business is manufacturing and selling of industrial fasteners used in auto industry, railways, white goods and farm equipment, among others. It operates in two geographical segments: India, which includes sales to customer within India, and Other Countries, which includes sales to customer outside India. Its products include cleveloc and all metal self locking nuts, u-nuts, dome cap nuts, wheel nuts, castle and slotted nuts, hose pipe fitting nuts, flange nuts, weld nuts, bolts and studs, and cold forged sleeves/bushes collars/spacers. It produces over 500 million nuts per annum in a range from M4 to M48 diameter and equivalent imperial sizes. It supplies a range of bolts from its associated companies ranging from M5 to M70. It also has a battery of multi-spindle automatic bar turning centers, which produce related automotive components.