Simmonds Marshall Limited is an India-based company. The Company is engaged in the business of manufacturing of nyloc self locking nuts (industrial fasteners). Its products include cleveloc self-locking nut, nyloc self-locking nut, u-nuts and wheel nuts, cap nuts, castle nuts, hose fitting nuts, flange nuts, cage nuts and weld nuts.

The Company caters to the automotive and industrial sectors and supplies to all the automobile manufacturers in India, as well as original equipment (OE) suppliers. The Company offers products to General Motors, Fiat, Honda, Caterpillar, Suzuki, Dana and New Holland.

Simmonds Marshall Limited was formally created and deployed as a legal entity in 1960 as a Private Limited Company in technical and financial collaboration with Firth Cleveland Fastenings Ltd., U.K. holding 51% of the equity of the company. This shareholding was diluted progressively and the balance of foreign holding was purchased fully by the promoters in 1987. In 1986, the company went public and is now a quoted company on the Stock Exchange. The company manufactures a range of Specialised Nylon Insert Self Locking Nuts and other Special Fasteners.

The company has been augmenting its cold forming capacity and can produce over 500 million nuts per annum in a wide range from M4 to M48 diameter and equivalent imperial sizes. These nuts are manufactured either to American, British, Japanese, ISO or Indian Standards in a variety of thread forms and protective finishes. The company also has a battery of multi-spindle automatic bar turning centres capable of producing related automotive components as well. The company is fully equipped to supply a wide range of Bolts from our associated companies ranging from M5 to M70.

During the fiscal year ended March 31, 2010 (fiscal 2010), the Company produced 2251.860 metric tons of nyloc self locking nuts (industrial fasteners). During fiscal 2010, it had an installed capacity to produce 2,400 metric tons of nyloc self locking nuts (industrial fasteners).