TKW Fasteners Pvt Ltd. Supplies Clutch Disk Rivets & Spacers. TKW Fasteners Pvt Ltd. Is an ISO 9001: 2008 registered organization. The Clutch Disk Rivets & Spacers find applications in automotive, heavy-duty truck, bus and other vehicle manufacturers. The Clutch Disk Rivets & Spacers are corrosion resistance and tapered shank rivets that provide up to 47% more break-away torque than standard rivets. A tapered shank, semi-tubular rivet can give better support. As the rivet clinches, sidewall thickness increases, so the rivet is less likely to collapse during clinching.