Amazon.com: M10-1.5 x 20mm Flanged Hex Head Bolts Flange Hexagon Screws, Stainless Steel 18-8 (304), Plain Finish, DIN 6921, 5 PCS : Industrial & Scientific
Everbilt 1/4 in. - 20 x 1/2 in. Zinc-Plated Serrated Flange Bolt 803978 - The Home Depot
Hex head flange w/serration bolt DIN 6921 A2 - stainless steel AISI304 M6x10 | Sistemi di fissaggio, utensili e macchine per lamiera: Rivit Fasteners & Tools
3/8-16 x 1" Serrated Hex Head Flange Screw Grade 5 Zinc Finish – US Bolt Kits
Hex head flange w/serration bolt DIN 6921 8.8 - white zinc plated steel M10x25 | Sistemi di fissaggio, utensili e macchine per lamiera: Rivit Fasteners & Tools
Flange Bolts | DIN 6921 Metric | ITA Fasteners
CAI DIN 6921 Flange Hex Screw
1/2-20 x 1 3/4 Fine 12-Point Flange Screw Black Oxide | eBay