Ideal for 1/4" - 3/4" diameter nut and bolt assemblies. Fills gaps up to .006 inches. Apply prior to assembly and easily remove with hand tools for servicing. Eliminates need for stocking lock nuts and lock washers. Use on cup and core plugs, pulley bolts, valve cover bolts, drive shaft bolts, oil pan bolts intake manifold bolts and more... "242 Loctite® functional equivalent"