Self Clinching Nut, 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 Fastener Industry Across India.