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 56818 5" Dia. Self-Generated Vacuum Dynorbital Supreme Random Orbital Sander, 3/16" Orbit
Dynabrade 93543 1-1/2" Dia. x 8-32 Female Center Thread, 150 Grit, A/O, 3-Ply, J-DynaCut Eyelet Star, 50/pack
Dynabrade 62787 Collection Bag 3-Pack
Dynabrade 15029 Contact Arm Ass'y, 1" Dia. x 3/8" W, Tapered Rubber Wheel, No Platen/Offset Design
Dynabrade 96608 Raptor Vac Cleaning Kit, w/ 10ft. Hose
Dynabrade 40321 Dynafile II Abrasive Belt Tool Versatility Kit
Dynabrade 64201 33" (84 cm) W x 41" (104 cm) L Downdraft Sanding Table, 115 V (AC)
Dynabrade 79896 8" Dynacut 240 Grit Extreme Orange Scalloped Edge Discs, 25 per box
Dynabrade 11253 Contact Arm Assy
Insize 1146-20B, MINI DIGITAL HEIGHT GAGE, 0-0.8"/0-20mm, 6928640380723
Dynabrade 50034 Collet Insert, 1/8" Capacity
Dynabrade 79920 6" Dia. x 80 Grit Non-Vacuum PSA DynaCut Disc, 100/Pack
Dynabrade 15030 Contact Arm Assembly, 5/16" Dia. x 3/8" W, Steel Wheel, with 1/2" W Platen
Dynabrade 82495 6" Dia. x 400 Grit A/O Vacuum PSA Filmbac DynaCut Disc, 100/Pack
Dynabrade 15003 Mini-Dynafile II Abrasive Belt Tool
Dynabrade 91246 8" Dia. x 220 Grit A/O Vacuum PSA DynaCut Disc, 25/Box
Dynabrade 78724 3/8" x 3/4"-B52 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 56178 6" Dia. Vacuum Disc Pad, Vinyl-Face
Dynabrade 91640 2" W x 36" L 180 Grit A/O DynaCut Belt, 10/pack
Dynabrade 90368 3/4" W x 34" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade X52H 5" (127 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, Hook-Face
Dynabrade 94772 1/2" W x 72" L 60 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 79061 1/2" W x 24" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 90924 3" Dia. x 40 Grit A/Z DynaCut Locking-Type (TR), Flap Disc, 10/pack
Dynabrade 95216 Pin
Dynabrade 57405 3-2/3" W x 7" L Dynaline Sander Versatility Kit, Non-Vacuum
Dynabrade 59380 Rotor/Vane Set
Dynabrade 78689 D8 Cartridge Roll Mandrel 1/8" Pilot Dia. x 3/4" Pilot Length, 1/4" Shank Dia. x 1-1/4" Shank Length
Dynabrade X62V 6" (152mm) Dia. Central-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, Hook-Face
Dynabrade 68000 Coolant Filtration System, 115 V (AC), 1 Phase, 60 Hz
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 79175 1" W x 18" L 80 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 15360 Dynafile III Abrasive Belt Machine for 24" Belts
Dynabrade 64002 SuperFinisher, 230 Volts (AC), 1 Phase, 50 Hz
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 53249 9" Dia. Type 27 Vertical Depressed Center Wheel Grinder, 3 HP, 6,000 RPM, 5/8"-11 Spindle
Dynabrade 52861 .4 hp Straight-Line Pencil Grinder, Rear Exhaust, 25,000 RPM, 1/8" Collet
Dynabrade 95848 Dynabrade Gear Oil
Dynabrade 79129 1" W x 18" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
3M 98235, Pro Strength Duct Tape 1210-A 1.88 in x 10 yd (48.0 mm x 9.14 m), 7000029903 
