LOCTITE® 263

Features and Benefits

Dual cure, acrylic dimethacrylate ester fluorescent threadlocker designed for the permanent locking and sealing of threaded fasteners.
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
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Technical Information

Agency approvals / certificates / specifications NSF/ANSI, norm 61
Application method Dispense system, Manual
Application temperature -65.0 - 360.0 °F (-55.0 - 180.0 °C )
Applications Threadlocking
Breakaway torque, M10 Steel Nuts/Bolts 33.0 N·m (290.0 in./lb. )
Colour Red
Cure type Anaerobic cure
Fixture time 10.0 min.
Key characteristics Disassembly: disassembly with heat, Fluorescent, General purpose, Oil tolerant, Primerless, Strength: high strength
Physical form Liquid
Prevail torque, M10 Steel Nuts/Bolts 33.0 N·m (290.0 in./lb. )
Recommended for use with Metal, Metal: passive metal
Specific gravity, @ 25.0 °C 1.1
Viscosity, 20 RPM 500.0 mPa·s (cP)

Frequently Asked Questions