M12-1.25 JIS Flange Nuts Small Hex M12x1.25 Nut 12mm x 1.25 Smooth Flange 10.9
JIS Hex Smooth Bottom Flange Nuts. Hex / Wrench Size: 17mm. Nut Specs Nut Height / Thickness:10.40mm ~ 11.8mm. It is a lot easier to resolve problems one on one.We will do our best to work out any issues there may be.