Loctite Loctite Heavy Duty Threadlocker, 0.2 oz

This removable threadlocker is designed for nuts, bolts, and fasteners sized 1/4” to 3/4” (6-20mm), perfect for securing scope mounts, rail screws, or even bike and motorcycle parts. Its anaerobic formula cures in 10 minutes and fully sets in 24 hours, locking fasteners against vibration, loosening, and corrosion while sealing out moisture. I applied it to the screws on my Pecawen Picatinny Rail and UTG QD Sling Swivel, and they’ve stayed rock-solid through range sessions and rough handling. The blue formula is removable with hand tools, so you can adjust or remove parts without a torch, unlike red threadlockers. Amazon reviews praise its effectiveness, with one user noting, “It’s perfect for firearms—my scope mount screws haven’t budged” (web:0). The 6 ml tube is small but goes a long way—a tiny drop per bolt is enough, making it cost-effective at $6-$10.