Prevents Nuts and Bolts from Loosening with Vibration
Our 3M™ Scotch-Weld™ Threadlocker TL90 hardens and seals threaded assemblies to resist vibration and prevent loosening or leakage of secured fasteners. Applying this adhesive to fasteners after tightening seals out moisture and prevents corrosion. Application is fast and easy with just a targeted squeeze of the bottle. The anaerobic formulation begins to cure quickly into a polymer that seals, secures, and retains. An activator can be used for even faster cure or larger gap sizes. This very low viscosity adhesive flows into threads after parts are assembled and loosens when needed with regular hand tools.
Recommended Applications
- Threadlocking of screws, bolts and nuts after assembly
- Applications vary by temperature resistance, removability and oil tolerance
Eliminates the Need for Lock Washers and Other Locking Components
Our 3M™ Scotch-Weld™ Threadlocker TL90 is effective for locking, vibration resistance, sealing, and bonding threaded assemblies. Places where it is useful include machine tool access bolts, hydraulic system bolts, gear box/driveshaft bolts, bearing cover cap screws, countersunk screws and conveyor roller bolts.
Understanding Anaerobic Adhesives
Anaerobic adhesives are uniquely formulated to cure in the absence of oxygen. The term “anaerobic” means “living without air” and when the oxygen is excluded, a chemical chain reaction begins that causes the adhesive to polymerize. Contact with metal speeds the polymerization process and rapidly accelerates the curing process, forming tough cross-linked plastic that provides aggressive adhesion with effective shear strength.
More commonly referred to as threadlockers, pipe sealants, retaining compounds, and gasket makers, these adhesives are often used to enhance the seal, or holding force, in the threads of joined fastener systems such as nut-and-bolt assemblies. A nut-and-bolt assembly may have as little as 15% metal-to-metal contact and even a small amount of anaerobic adhesive readily fills any air voids between the threads and then hardens to a thermoset plastic. These unique adhesives are easy-to-dispense, cure rapidly, and provide effective torque strength while resisting temperature and vibration and sealing out moisture and gasses to protect against corrosion. Anaerobic adhesives can decrease manufacturing costs, enhance equipment reliability, minimize aftermarket breakdown, and reduce warranty claims.

3M 05137, Scotch-Brite EXL Deburring Wheel, XL-WL, 9S Fine, 10 in x 1 in x 5 in, 7000046072
3M 50416, Fibre Disc 501C, 80, 4-1/2 in x 7/8 in, Die 450E, 7100039022
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
Dynabrade 78312 6" Dia. x 1" W x 1" Center Hole, 120 Grit, A/O, DynaCut Flap Wheel
ACS Flap Disc, Type 29 (Curved) Full Diamond 4-1/2 X 5/8-11 60M, 333.FD4.5-60/T29
3M 89613, Fibre Disc 782C TN Quick Change, 4-1/2 in 80+, 7100099269
3M 27661, Cubitron II Fibre Disc 987C, TN Quick Change, 4-1/2 in, 60+, 7100068024
3M 89651, Fibre Disc 787C TN Quick Change 787C, 4-1/2 in 80+, 7100099277
3M 27447, Cubitron II Fibre Disc 987C, 36+, 4-1/2 in x 7/8 in, Die 450E, 7000119175
Dynabrade 95722 Threaded Mandrels, 1/4" Dia x 1/4" Shank
Dynabrade 96007 Tune-Up Kit for .5hp Motor
3M 77597, Fibre Disc 381C, 50, 4-1/2 in x 7/8 in, Die 450E, 7000118936
Dynabrade 25234 Vane Set (4pk)
Dynabrade 54705 Rotor/Vane Set
3M 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
Standard Abrasives 713290, Spiral Band, 2 in x 2 in 60, 7010310545
3M 87254, Fibre Disc 782C, 87254, 4-1/2 in x 7/8 in, 36+, 7100109858
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 87252, Cubitron II Fibre Disc 987C, 60+, 4-1/2 in x 7/8 in, Die 450E, 7100109859
3M 89642, Fibre Disc 787C TN Quick Change 787C, 4-1/2 in 60+, 7100099244
3M 87256, Fibre Disc 787C, 4-1/2 in x 7/8 in, 36+, Trial Pack, 7100109879
3M 77595, Fibre Disc 381C, 24, 4-1/2 in x 7/8 in, Die 450E, 7000118929
3M 50413, Fibre Disc 501C, 36, 4-1/2 in x 7/8 in, Die 450E, 7100019979
Dynabrade 79478 4-1/4" Dia. x 2" W, 5/8"-11 Center Thread, 120/Medium, DynaBrite Interleaf Wheel
Standard Abrasives 530003, A/O Resin Fiber Disc, 4-1/2 in x 7/8 in 36, 7010331425
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case 
