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.

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Dynabrade 82564 1/4" W x 18" L 120 Grit Ceramic DynaCut Belt, 50/pack
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
Dynabrade 18615 Label for Model # 51510, 2,500 RPM
Dynabrade 78055 1" W x 24" L Medium NWN DynaBrite Belt, 10/pack
Dynabrade 82443 6" Dia. x 6\80 Grit A/O Hook Non-Vacuum Film-Backed DynaCut Disc, 100/Box
Dynabrade 50946 - 6" (152 mm) Dia. Non-Vacuum Wet/Dry Sander Disc Pad, Hook-Face, Short Nap
Dynabrade 59339 Vacuum Cuff, 1", w/Groove
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 68101 Coolant Filtration System, 230 V (AC), 1 Phase, 50 Hz
Dynabrade 53282 9" (180 mm) Dia. Right-Angle Grinder, 2.8 HP, 6,500 RPM, 5/8"-11 Spindle
Dynabrade 92187 1" W x 30" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 94772 1/2" W x 72" L 60 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 91707 DynaMesh 3" 280 Grit Hook & Loop Discs, 50 per box
Dynabrade 92937 5" Dia. x 3-1/2" W Standard Dynacushion Pneumatic Wheel
Dynabrade 93552 2" Dia. x 1/4"-20 Female Center Thread, 120 Grit, A/O, 3-Ply, J-DynaCut Eyelet Star, 50/pack
Dynabrade 98265 3/8" Female Coupler with 3/8" Male Plug Assembly
Dynabrade 11254 Contact Arm Ass'y, 4-3/4" Dia. x 1/2" W
Standard Abrasives 709907, A/O Straight Cartridge Roll, 1/4 in x 1-1/2 in x 1/8 in 120, 7100080014
Dynabrade 79129 1" W x 18" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 96558 Raptor Vac Cleaning Kit, w/ 6ft. Hose
Dynabrade 52834 1/4" Drill, .4 HP, Rear Exhaust, 3,600 RPM
Dynabrade 80459 HEPA 13 Vacuum Cartridge Filter
Dynabrade 79175 1" W x 18" L 80 Grit DynaCut Premium Ceramic Belt, 50/pack
Dynabrade 11253 Contact Arm Assy
Dynabrade 22070 Downdraft Table Accessory Pack (Air Manifold, FRL and On/Off Air Valve)
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
3M 27199, Foil Repair Tape 3311-10D, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7100198304 
