Permatex 24200 Medium Strength Threadlocker Blue, 6 ml Locks and seals while preventing parts loosening due to vibration Protects threads from corrosion Ideal for all nut and bolt applications 1/4" to 3/4" (6mm to 20mm) Removable with hand tools for easy disassembly Suggested Applications: valve cover bolts, water pump bolts, oil pan bolts, drive shaft bolts, rocker arm adjustment nuts, carburetor studs