Goldscrew PZ Double-countersunk Yellow-passivated Carbon steel Screw (Dia)4mm (L)50mm, Pack of 200 | DIY at B&Q
Drilling screw Pan head, 4,8 x 25 mm, Steel zinc plated - 1pcs
Sitemate Stainless Steel Decking Screws with Countersunk Torx Head | e-Hardware
100 Pcs M3-0.50 x 6mm Button Head Socket Cap Screws, Passivated 18-8 Stainless Steel, Allen Hex Drive, ISO 7380, by Fullerkreg,Come in an Easy-use Storage Case : Amazon.co.uk: DIY & Tools
DIN 6332-ZB Grub screws Zinc plated, blue passivated | Elesa+Ganter