Stainless Steel Acorn Cap Nuts,M8 to M12,Pack of 10-piece (M10, thread Dia. 10 mm) Stainless Steel Cap Nuts,Metric,Pack of 10 piece M8 Acorn Nut can be fit to the thread Dia. 8mm screws,thread pitch 1.25 mm M10 Acorn Nut can be fit to the thread Dia. 10mm screws,thread pitch 1.5 mm M12 Acorn Nut can be fit to the thread Dia. 12mm screws,thread pitch 1.75 mm