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 is removable.

It's worth noting, however, that Threadlocker Green is classified as a medium-high strength adhesive. So while it isn't quite as strong as the Red formula, it will still require heat for removal.

One such product is the green Loctite threadlocker from Henkel, a convenient little adhesive you can drip into just about any threaded fastener to give it that extra bit of grip you're hoping for.

It allows fasteners to be disassembled using standard hand tools. 2700NA is a high-strength threadlocker for permanent assembly of fasteners up to 0.75 in. in diameter.