vijak imbus m8 x 16, knobs with bolt M8x16 fi 50 Bevc - rhyanabbott.com
400pcs) ISO 1458 M6X40 Socket Head Cap Screws, 6-Lobe Drive, Low Head A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP1458026-40: Amazon.com: Industrial & Scientific