Applications

LOCTITE® 276™ – High-strength Threadlocker

  • Item Name: LOCTITE® 276™
  • Manufacturer: Henkel
  • Technologies: Acrylic, Dimethacrylate ester
  • Color: Green
  • Cure Type: Anaerobic, Secondary Cure with Activator
  • Package Size: Contact to Avantek for details.
  • Shelf Life: Contact to Avantek for details.

1. Product Overview

  • Technology: Acrylic
  • Chemical Type: Dimethacrylate ester
  • Appearance: Green liquid
  • Fluorescence: Positive under UV light
  • Viscosity: Low
  • Cure Type: Anaerobic (secondary cure with activator)
  • Application: Threadlocking
  • Strength: High
  • Key Features: Permanent locking and sealing of threaded fasteners, vibration resistance, fast cure without activators on less active substrates.

2. Applications

  • Used for high-strength threadlocking of fasteners to prevent loosening and leakage due to shock and vibration.
  • Suitable for plated or coated surfaces with reduced need for activators.
  • Applied on bolts, nuts, and threaded metal components.

3. Typical Properties

Uncured Material
Property Value
Specific Gravity @ 25°C 1.05
Viscosity (Brookfield RVT, 25°C, Spindle 2, 20 rpm) 380 – 620 mPa·s (cP)
Flash Point See SDS
Cured Material
Property Value
Coefficient of Thermal Expansion (ISO 11359-2) Below Tg: 47 × 10⁻⁶ K⁻¹, Above Tg: 143 × 10⁻⁶ K⁻¹
Glass Transition Temperature (Tg) 104°C
Adhesive Properties (After 24h @ 22°C)
Property Value
Breakaway Torque (ISO 10964, M10 steel nuts & bolts) 60 N·m (530 lb.in)
Prevail Torque (ISO 10964, M10 steel nuts & bolts) 41 N·m (360 lb.in)
Breakloose Torque (Pre-torqued to 5 N·m) 55 N·m (490 lb.in)
Compressive Shear Strength (ISO 10123, Steel pins & collars) ≥20 N/mm² (≥2,900 psi)
Environmental Resistance (Breakloose Torque Retention)
Condition 100h 500h 1000h
Acetone (22°C) 85% 80% 80%
Brake Fluid (22°C) 95% 95% 95%
Ethanol (22°C) 95% 85% 90%
Motor Oil (125°C) 90% 100% 90%
Gasoline (22°C) 100% 95% 95%
Water/Glycol (87°C) 90% 85% 90%

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