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LOCTITE 27121 Threadlocking Adhesive

LOCTITE 27121 is a high-strength, anaerobic threadlocking adhesive ideal for securing threaded fasteners in applications exposed to shock and vibration. This one-component adhesive cures rapidly when confined between close-fitting metal surfaces, providing a permanent lock and seal. It is tested to Military Specification Mil-S-46163A and is suitable for use in various industries, including automotive, industrial machinery, and general assembly.

Authorized Distributors
Source:Newark
Part No:27121
Stock:22
Inv Date:06-20-2026
Price: Unit price: $40.81
Buy/RFQ:

LOCTITE 27121 Threadlocking Adhesive Specifications:

  • Technology: Acrylic
  • Chemical Type: Dimethacrylate ester
  • Appearance: red LMS
  • Fluorescence: Positive under UV light
  • Components: One component
  • Viscosity: Low
  • Cure: Anaerobic
  • Secondary Cure: Activator
  • Application: Threadlocking
  • Strength: High
  • Typical Applications: Locking and sealing of large bolts and studs (up to M25)
  • Mil Specification: Mil-S-46163A
  • UL Classification: MH8007 - Fire hazard is small
  • Specific Gravity: 1.1
  • Flash Point: See SDS
  • Viscosity, Brookfield: 400 to 600 mPa·s
  • Breakaway Torque (M10 steel nuts and bolts): 8.5 to 25.4 lb.in.
  • Prevail Torque (M10 steel nuts and bolts): 75 to 225 lb.in.
  • Breakaway Torque (After 24 hours): 150 to 300 lb.in.
  • Cadmium Nuts and Bolts (Breakaway Torque): 40 to 125 lb.in.
  • Zinc Nuts and Bolts (Breakaway Torque): 40 to 125 lb.in.

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Frequently Asked Questions

Where can I buy LOCTITE 27121?

You can click on the BUY or RFQ button to purchase 27121 from an authorized LOCTITE distributor.

How do I troubleshoot issues or seek technical support for part 27121?

You can download the 27121 datasheet or visit the LOCTITE website for support.

Who is the manufacturer of 27121?

LOCTITE

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