LOCTITE® 263

Features and Benefits

Designed for high-strength permanent locking and sealing of threaded fasteners. Removable with heat.
LOCTITE® 263 is a red, high-strength, primerless threadlocker for permanently locking and sealing bolts, nuts and studs to prevent loosening due to vibration. It works on all metals without primer, including passive substrates such as stainless steel, aluminum and plated surfaces. Suitable for use on most oil-coated, 'as-received' fasteners without cleaning.
  • Ideal for heavy duty applications, such as studs into motor housings, where high strength is required
  • Prevents fastener loosening and leakage from shock and vibration
  • Permanent locking and sealing of threaded fasteners - removable with heat
  • Requires heat for disassembly
  • Offers high temperature performance (up to 182°C / 360°F) 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. )
Color 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)