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LOCTITE® 276™ – Adhesive – Threadlocking

  • Item Name: LOCTITE® 276™
  • Manufacturer: Henkel
  • Technologies: Acrylic, Dimethacrylate ester
  • Color: Green
  • Cure Type: Anaerobic, Secondary Cure with Activator
  • Package Size: Contact to Techniq VN for details.
  • Shelf Life: Contact to Techniq VN 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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BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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