MOILINJAEY 2Pcs Universal Toilet Seat Bolt Screw Set Heavy Duty Toilet Seat Hinge Bolt with Plastic Nut, Metal and Rubber Washer Toilet Hardware Replacement for Top Mount Toilet Seat Hinge : Amazon.co.uk:
2 Set M6 Expanding Rubber Bolt Top Nuts Set(Washer Dia: 20mm/0.78")