5/16" UNC Socket Cap Head Screws - Zinc Plated Steel
M5 (5mm x 6mm) Hex Socket Cap Screw (Bolt) (Low Head) - Stainless Steel (A2) (Pack of 20) : Amazon.co.uk: DIY & Tools
M6-1.0 x 8mm Flat Head Hex Socket Cap Screws Bolts, 304 Stainless Steel 18-8, Countersunk Connector Screws for Furniture Baby Bed Chairs, Bright Finish, Full Thread, Pack of 50 : Amazon.co.uk: DIY
M2 x 6mm Socket Cap Head Screws (DIN 912) - A2 Stainless Steel