Phillips hex head flange combi bolts with serration M6 x 8 Blue zinc-plated steel 1.⁠ ⁠Hex A/F — 9.80/10.00mm 2.⁠ ⁠⁠washer dia — 12.25/12.75mm 3.⁠ ⁠⁠head thickness — 5.00/5.40mm 4.⁠ ⁠⁠serration — 18 serrations 5.⁠ ⁠⁠threading length — 7.80/8.20mm 200 kg