When Should You Use Blue Loctite Vs Red? The medium strength blue formula of Loctite's threadlocker is meant for fastener threads larger than 6 mm (1/4 inch) and smaller than 20 mm (3/4 inch) and ...

Loctite Threadlocker comes in a range of color ratings, each with its own particular ideal use case. Read on to see what each one is particularly good at.

Finally, Green Loctite Threadlocker 290 is a wicking compound, which means it's made for pre-assembled pieces. Drop it on, and it will work its way into a fastener's nooks and crannies, sealing ...

Threadlocker Blue gets used a lot more often than the Red version because most fasteners will probably need to be disassembled at some point. Red offers a stronger, but much more permanent ...