What Is the LOCTITE® DRI 2045™ Coating for Threaded Fasteners?
LOCTITE® DRI 2045™ is a medium- to high-strength, pre-applied threadlocker designed to help prevent threaded fasteners from loosening while also providing thread sealing after curing. The two-component acrylic coating uses methacrylate ester technology and is specifically designed to meet automotive specification requirements. It is suitable for plain and passivated metal surfaces.
The dry-to-the-touch coating remains inert until assembly. During installation, microcapsules within the coating are crushed, releasing an active ingredient that initiates the anaerobic curing process. Once cured, the coating helps lock the fastener in place while also acting as a thread sealant.
LOCTITE DRI 2045 is particularly well suited for high-volume production environments where threaded parts need to arrive ready for immediate assembly and applying a liquid threadlocker on the production line may not be practical.
Key Benefits
- Medium- to high-strength threadlocking to help prevent fastener loosening
- Pre-applied, dry-to-the-touch coating for ready-to-use threaded components
- Acts as a thread sealant after curing
- Good compatibility with plain and passivated metal surfaces
- Specifically designed to meet automotive specification requirements
- Good hot-strength performance
- Heat-aging capabilities up to 220°C
- Good solvent and chemical resistance
- Four-year on-part life
- Performs across multiple metal substrate and fastener finishes
- Suitable for high-volume production environments
- Eliminates the need to apply a liquid threadlocker during final assembly
The product’s combination of pre-applied convenience, substrate compatibility, temperature performance, and locking strength makes it well suited for demanding threaded assemblies.
Where Is LOCTITE® DRI 2045™ Used?
| Application | How LOCTITE DRI 2045 Supports the Assembly |
|---|---|
| Threaded Fasteners | Provides medium- to high-strength locking to help prevent loosening |
| Automotive Assemblies | Specifically designed to meet demanding automotive specification requirements |
| High-Volume Manufacturing | Allows threaded parts to arrive pre-applied and ready for immediate assembly |
| Plain Metal Fasteners | Provides good substrate compatibility on plain metal surfaces |
| Passivated Metal Fasteners | Suitable for threaded components with passivated metal surfaces |
| Heat-Exposed Assemblies | Provides good hot strength and heat-aging capabilities up to 220°C |
| Applications Requiring Thread Sealing | Functions as a thread sealant after curing |
| Automated Fastener Processing | Can be applied through automated cleaning, feeding, coating, rust-proofing, and drying operations |
Industries & Markets
| Industry or Market | Typical Application |
|---|---|
| Automotive | Threaded fasteners designed to meet demanding automotive specifications |
| Automotive Components | Fasteners requiring resistance to heat, chemicals, fluids, and operating conditions |
| High-Volume Manufacturing | Pre-applied threaded components ready for efficient assembly |
| Industrial Manufacturing | Threaded assemblies requiring dependable locking and sealing |
| Metal Component Manufacturing | Plain and passivated metal fasteners and threaded parts |
| Fastener Manufacturing & Processing | Components requiring a pre-applied threadlocking solution |
| Automated Assembly Operations | Ready-to-use fasteners that reduce the need for liquid threadlocker application on the production line |
Technical Highlights
| Property | LOCTITE DRI 2045 Performance |
|---|---|
| Technology | Acrylic |
| Chemical Type | Methacrylate ester |
| Components | Two-component system |
| Cure Type | Anaerobic |
| Application | Threadlocking |
| Strength Classification | Medium to high strength |
| Compatible Substrates | Plain and passivated metal surfaces |
| Heat-Aging Capability | Up to 220°C |
| On-Part Life | 4 years |
| Breakaway Torque – 24 Hours | ≥10 N·m on tested M10 × 1.5 steel bolts |
| Prevail Torque – 24 Hours | ≥5 N·m on tested M10 × 1.5 steel bolts |
| Breakaway Torque at 160°C | ≥10 N·m after specified heat exposure |
| Breakaway Torque – Anti-Rust Steel | 15 N·m after 72 hours |
| Breakaway Torque – Zinc-Plated Steel | 15 N·m after 72 hours |
| Breakaway Torque – Magni 554-Plated Steel | 25 N·m after 72 hours |
| Breakloose Torque – Anti-Rust Steel | 52 N·m |
| Breakloose Torque – Zinc-Plated Steel | 54 N·m |
| Breakloose Torque – Magni 554-Plated Steel | 50 N·m |
| Coefficient of Friction | 0.13–0.18 on specified tested fastener combinations |
Chemical Resistance
LOCTITE DRI 2045 was tested for chemical and solvent resistance on M10 black oxide bolts and steel nuts. Results represent the percentage of initial breakaway strength retained following exposure.
| Chemical or Environment | Test Temperature | 168 hours | 500 hours | 1,000 hours |
|---|---|---|---|---|
| Motor Oil | 120°C | 100% | 100% | 95% |
| Motor Oil | 150°C | 50% | 50% | 50% |
| Unleaded Gasoline | 22°C | 85% | 85% | 85% |
| Brake fluid | 90°C | 125% | 125% | 125% |
| Water/Glycol 50/50 | 120°C | 100% | 100% | 100% |
| Transmission Fluid | 120°C | 100% | 100% | 95% |
| Transmission Fluid | 150°C | 65% | 70% | 70% |
| Gear Oil | 120°C | 100% | 65% | 65% |
| DEF (AdBlue®) | 22°C | 90% | 110% | 85% |
Need a High-Performance Pre-Applied Threadlocking Solution?
LOCTITE® DRI 2045™ provides a ready-to-use threadlocking solution for threaded assemblies that require dependable resistance to loosening, compatibility with a variety of metal surfaces, and reliable performance under demanding operating conditions.
With medium- to high-strength locking, thread-sealing performance, heat-aging capabilities up to 220°C, and resistance to automotive fluids and solvents, DRI 2045 is particularly well suited for automotive and high-volume manufacturing applications.
