Vibra Tite Blue 121 - 50 ML
Medium Strength Threadlocker
(For Fasteners 1/4" - 3/4")

Vibra-TITE Blue 121 Medium Strength (Removable) Threadlocker is a general purpose product. 121 will hold all metric, imperial or 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.

Technical Features
Resin:................................. Dimethylacrylate
Color:....................................Blue
Fixture Speed w/Primerﾅﾅﾅ...<5 seconds
Fixture Speed w/out Primer 20 min. @ 77/F
Viscosity (Thixotropic).........1200-5000 cps
Gap Fill..................................0.007"
Shelf Life.........................12 months @ 68ﾰF
Max. Operating Tempﾅﾅ -65ﾰF to +300ﾰF
Loctite Part # 24231

Cured Performance
Full Cure Time.................24 hours @ 68ﾰF
Typical Breakaway Strength..100-200 in.lbs.
Typical Prevailing Strength......30-60 in.lbs.


Vibra-TITE 121 is recommended for threaded components under 1" in diameter. Components can be disassembled using conventional hand tools. It is color coded blue and once cured, seals and vibration proofs the assembly giving controlled breakaway and prevailing torques. Product conforms to MIL-S-46163A , ASTM D-5363, NSF.

Lock and seal threaded fasteners
Stop fasteners from loosening from shock and vibration
Perform better than lock washers, bevel washers, and other forms of mechanical locking devices
Alleviates rust-lock
Prevent Leakage

Vibra-Tite 121 TDS

MADE IN MICHIGAN!!