Prevents Nuts and Bolts from Loosening with Vibration
Our 3M Scotch-Weld Threadlocker TL71 hardens and seals threaded assemblies to resist vibration and prevent loosening or leakage of secured fasteners. Applying this adhesive to fasteners before 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. The high strength adhesive is only removable through high heat application.
Recommended Applications
- Threadlocking of screws, bolts and nuts
- Applications vary by temperature resistance, removability and oil tolerance
Eliminates the Need for Lock Washers and Other Locking Components
Our 3M Scotch-Weld Threadlocker TL71 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.

Insize 7231, SCRIBER, 6928640320071
Dynabrade 10040 Raptor Vac Pack Mobile Auto Vacuum System, 20 Gal. 120 V
Dynabrade 95990 Wet Tank Assembly
Dynabrade 96214 Bearing Removal Tool
Dynabrade 92116 1/2" W x 12" L 320 Grit A/O DynaCut Belt, 50/pack
Dynabrade 93380 Carbide Burr 8-Piece Burr Kit, 6mm Shank
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 79170 1" W x 30" L 60 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
Dynabrade 78709 3/8" x 3/4"-B52 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 79134 3/4" W x 20-1/2" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 56180 5" Dia. Non-Vacuum Disc Pad, Hook-Face, Short Nap
Dynabrade 79118 1/8" W x 18" L 80 Grit Ceramic DynaCut Belts, 50/pack
Dynabrade 78305 1-1/2" Dia. x 1" W x 1/4" Shank, 80 Grit, A/O DynaCut Flap Wheel, 10/pack
Dynabrade 97016 1/4" NPT Ball Swivel
Dynabrade 90211 1/8" W x 18" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
Dynabrade 92186 1" W x 30" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 21432 ND220, Vane 5/Pack
Dynabrade 22070 Downdraft Table Accessory Pack (Air Manifold, FRL and On/Off Air Valve)
Dynabrade 64000 SuperFinisher, 115 Volts (AC), 1 Phase, 60 Hz
Dynabrade 90405 1/8" W x 24" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 78321 3" Dia. x 1" W x 1/4" Shank, Fine, NWN DynaBrite Wheel, 10/pack
Dynabrade 15006 Mini-Dynafile II Abrasive Belt Tool Versatility Kit
Dynabrade 15300 Dynafile III Abrasive Belt Tool
Dynabrade 79109 1/2" W x 12" L 80 Grit DynaCut Premium Ceramic Belts, 50/pack
Dynabrade 11254 Contact Arm Ass'y, 4-3/4" Dia. x 1/2" W
3M 28848, Unitized Wheel Mandrel 28848, 1-5/8 in x 1/4 in x 3/4 in x 1/4 in, 7100082547
Dynabrade 52574 4" (102 mm) Dia. Straight-Line Cut-Off Wheel Tool, Rear Exhaust, 1 HP, 18,000 RPM, 3/8"-24 Spindle
Dynabrade 94790 1/2" W x 72" L 120 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 94772 1/2" W x 72" L 60 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 78423 4-1/2" Dia. x 3/8" Very Fine DynaBrite Surface Conditioning Disc, 25/pack
Dynabrade 56815 5" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/16 Orbit
Dynabrade 79808 DynaBolt AO 4" x .035" x 3/8" T1 Cut-off Wheel, Box of 10 Discs
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 85492, Scotch Foil Tape 3311, Silver, 2 in x 10 yd, 3.6 mil, 2MMX1200M, 7010334860 
