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Loctite

Loctite 221 Threadlocker

221

Overview

Loctite 221 is a low-strength, low-viscosity threadlocker for locking small diameter or long engagement length fasteners up to M12, allowing easy disassembly with standard hand tools without shearing the screw.

Specifications

Color
Purple
Strength
Low
Base Type
Dimethacrylate ester (acrylic)
Viscosity
Low (100-150 cP, Brookfield RVT spindle 1 @ 20rpm)
Cure Type
Anaerobic

Technical Information

  • Low viscosity for small/long-engagement fasteners
  • For metal fasteners up to M12
  • Fluoresces under UV light

Typical Applications

  • Small diameter fasteners up to M12
  • Long engagement length screws
  • Set screw adjustment

Industries

ManufacturingOil & GasPetrochemicalAutomotive MaintenanceGeneral Maintenance

Technical Documents

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