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.

Dynabrade 53060 3/8" Pistol Grip Drill, .7 HP, Rear Exhaust, 3,400 RPM
Dynabrade 92103 3" W x 10-11/16" L 120 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 50767 Spring Pin
Dynabrade 50296 5" Dia. Disc Backup Pad, Hard Density, 5/8"-11 Thread
Dynabrade 92150 1/2" W x 18" L 80 Grit Ceramic DynaCut Scalloped Edge Belt, 50/pack
Dynabrade 65014 2" x 36" (51 mm x 914 mm) Electric Tool Post Grinder (Air Tension), 2 hp, 3,450 RPM, Wet, 230 V (AC), 1 Phase, 60 Hz
Dynabrade 50617 Dust Collection System
3M 50258, Roloc Disc 777F, 60 YF-weight, TSM, 3 in, Die RS300VM, 7010325551
Dynabrade 79126 3/4" W x 18" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 52577 3" (76 mm) Dia. Straight-Line 6" (152 mm) Extension Cut-Off Wheel Tool, Rear Exhaust, 1 HP, 18,000 RPM, 3/8"-24 Spindle
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 18594 Pinion Gear
Dynabrade 79521 1/2" W x 24" L Premium Medium Plus NWN DynaBrite Belt, 10/pack
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 56815 5" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/16 Orbit
Dynabrade 79129 1" W x 18" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 95541 Grease Gun
Dynabrade 22070 Downdraft Table Accessory Pack (Air Manifold, FRL and On/Off Air Valve)
Dynabrade 82577 1/2" W x 24" L 80 Grit Ceramic DynaCut Belt, 50/pack
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 95848 Dynabrade Gear Oil
Dynabrade 56180 5" Dia. Non-Vacuum Disc Pad, Hook-Face, Short Nap
Dynabrade 90874 2" Dia. Very Fine NWN DynaBrite Locking-Type Disc, 25/pack
Dynabrade 64207 36" (91 cm) W x 72" (183 cm) L Downdraft Sanding Table, 230 V (AC)
3M 20274, Neoprene Contact Adhesive 10, Light Yellow, 1 Gallon Can, 7000144610, 4/case 
