M8-1.25×20 JIS Small Head Flange Bolts M8x1.25 x 20mm Screws 12mm Wrench Size ZY
JIS Spec Flange Bolts. (TL) Thread Length: 20mm. Flange Bolt Specs (F) Wrench Size:12mm. Thread:1.25 (Coarse Thread). Finish:Yellow Zinc Plating. (H) Head Thickness: 8.25mm. It is a lot easier to resolve problems one on one.