Skip to content Skip to navigation menu


263™ High Strength Threadlocker

Item #100869844
    Shipment Options

Product details

  • Loctite® 263 High Strength Threadlocker
  • 50 mL Bottle


  • LOCTITE® 263 is a red, dual cure, acrylic dimethacrylate ester fluorescent threadlocker designed for the permanent locking and sealing of threaded fasteners. It cures between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. It works on active metals (e.g. brass, copper) and passive substrates such as stainless steel and plated surfaces.


  • Particularly suited for heavy duty applications such as studs into motor housings where high strength is required
  • Prevents loosening and leakage from shock and vibration
  • Designed for the permanent locking and sealing of threaded fasteners
  • Provides robust curing performance
  • Offers high temperature performance and oil tolerance


Container Size 50 ml
Cure Speed Fixture 10 min
Temperature Range [Max] 360 °F
Strength High
Physical Form Liquid
Curing Method Anaerobic
Torque (Break) 275 in lb
Cure Speed Full (Steel) 24 h
Color Red
Recommended Primer None
Breakaway Torque 33 Nm, 290 in lb (M10 Steel Nuts/Bolts)
Fastener Size Range 1 in or smaller
Viscosity 500 mPa·s (cP) @ 20 RPM
Container Type Bottle
Chemical Compound Dimethacrylate Ester
Torque (Prevail) 290 in lb
Weight 0.17 LB
EAN or UPC 79340439061
Close Compare List Open Compare List Toggle

Product Comparison