Threadlocker Blue Stick 19g/.67oz

Loctite Threadlocker Blue Stick 19g/.67oz is a medium-strength anaerobic threadlocker engineered for fastening and sealing threaded assemblies in machinery, firearms, tactical equipment, and industrial applications. This stick format delivers precise application directly to bolt threads, preventing loosening from vibration while remaining fully removable with standard hand tools—ideal for maintenance-critical components that require both security and serviceability.

The blue formulation works by filling microscopic gaps between male and female threads, then curing in the absence of air to create a controlled, removable bond that resists vibration-induced loosening. At 19 grams per stick, the compact 3.85 x 1 x 8 inch form factor allows controlled, mess-free application without excess liquid runoff—critical when working on precision components where contamination risks damage. The stick applicator enables targeted thread coating, reducing waste and ensuring consistent coverage across bolt diameters from small fasteners to larger diameter applications common in tactical and mechanical assemblies.

Gunsmiths, armorers, equipment technicians, and maintenance professionals rely on Loctite Blue Stick to secure critical fasteners on AR platforms, optic mounts, pressure switches, and modular components where vibration loosening poses operational or safety risks. The removable nature makes it preferred over red permanent threadlockers for field maintenance, allowing bolt replacement without heat or destructive disassembly. Compatible with steel, stainless steel, and plated fasteners, this threadlocker performs reliably across temperature ranges encountered in storage, transport, and tactical use environments.