Clinch Nut Manufacturer, Suppliers In Ahmedabad, India, Gujarat. Kotadia Fasteners (Kotadia Inc.) Is Leading Suppliers Of Self Clinching Nut, Clinching Nut In India. With A Commitment To Excellence And A Reputation For Reliability, Kotadia Fasteners Has Established Itself As A Trusted Name In The Self Clinching Fastener Industry Across India.