arrow_down arrow_left arrow_right arrow_up burger_menu ic-checkmark close contact download edit filter Icon-GetDirections location_selector Shape Icon-GoToWebsite search neu social_facebook social_google_plus social_instagram social_linkedin social_snapchat social_twitter social_vk social_wechat social_xing social_youtube


Features and Benefits

Low strength, low viscosity threadlocking adhesive. Formulated for small metal threads up to M12.
LOCTITE® 221 is a methacrylate-based threadlocking adhesive designed for low strength applications on small threads up to a maximum size of M12. Typical fixture times are 25, 20 and 210 min on steel, brass and stainless steel respectively. Offering low viscosity and a breakaway torque of 8.5 Nm, the product is designed for fasteners that require easy disassembly with standard hand tools.
  • Low strength
  • Low viscosity
  • Designed for small threads
  • Various pack sizes
Read More

Documents and Downloads

Technical Information

Chemical Basis / Base Methacrylate
Color Purple
Fixture Time 20 - 210 min.
Substrates Metal: Brass, Metal: Steel, Metal: Steel - Stainless Steel
Viscosity 100 - 150 mPa.s (cP) Brookfield