Standard DIN 6921. Type Fine Pitch Flanged Hexagon Bolts. Model Flanged Hexagon Bolts. Head Style Flanged Hexagon. M10 - 10mm (Suitable Spanner Size 17mm) Pitch 1.50mm. M5 X 10MM FLANGED HEXAGON HEAD BOLTS FLANGE HEX SCREWS A2 STAINLESS STEEL 84.
eBay