SKIR'CO (Pack of 1000 pcs) Painted Blind Rivets 4.0 x 8 mm, Dome Head, DIN 7337, Aluminium Rivet, Pop Rivets (1000, Anthracite Grey RAL 7016) : Amazon.co.uk: DIY & Tools
Round pan head blind rivet, alu/st, anthracite, RAL 7016, bore Ø 3.1, 3.0 x 10.0 - Superb Hardware