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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, high-strength, primerless threadlocker for permanently locking and sealing bolts, nuts and studs to prevent loosening due to vibration. It works on all metals, including passive substrates such as stainless steel, aluminum and plated surfaces without the use of primer. Suitable for use on most oil-coated, “as-received” fasteners without cleaning.
  • 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 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)

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