Vibra-TITE 121 Medium Strength Threadlocker is a general purpose product. 121 will hold all conventional sized nuts and bolts, meeting the requirements of over 80% of fastening applications. It does not run off or drip and does not migrate after assembly due to its thixotropic chemistry. Once applied, parts install easily, lubricated by the adhesive.

Vibra-TITE 121 replaces lock washers, plastic inserts and locks machine access bolts, and hydraulic system bolts. Used on gear box bolts, drive shaft fasteners, bearing cover cap screws, counter sunk screws, conveyor roller bolts and construction equipment.