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, aluminium 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 due to shock and vibration

Permanent locking and sealing of threaded fasteners – removable with heat

Requires heat for disassembly

High temperature performance (up to 182°C/360°F) and oil tolerance

Technical specification

Product category: Threadlockers

Technologies: Acrylates, anaerobic cure

Agency approvals / certificates / specifications: NSF/ANSI-norm 61

Application method: Dispense system; Manual

Application temperature: -65.0 °F - 360.0 °F (-55.0 °C - 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)