LOCTITE AA H3101
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features
- 1:1 Controlled Mixing
- 20 to 25-Minute Fixture Time
- Up to 9.5 mm Gap Filling
Product Description
LOCTITE® AA H3101™ is a two-component, room-temperature curing methacrylate structural adhesive designed for high-strength bonding of metals, plastics, composites and other engineering substrates. Featuring a 1:1 mix ratio and highly thixotropic non-sag consistency, the adhesive develops handling strength within approximately 20 to 25 minutes and provides durable bonds with excellent environmental resistance, impact strength and peel performance. The product is capable of filling gaps up to 9.5 mm and maintains mechanical integrity across a broad temperature range, making it suitable for industrial assembly, fabrication and composite bonding applications.
Key Features & Benefits
- Two-component methacrylate structural adhesive system.
- Convenient 1:1 mix ratio for dispensing and processing.
- Fast fixture time of approximately 20 to 25 minutes.
- Excellent environmental resistance after cure.
- Superior impact and peel strength performance.
- Highly thixotropic, non-sag formulation.
- Gap-filling capability up to 9.5 mm.
- Suitable for bonding metals, composites and many plastics with minimal surface preparation.
Recommended Applications
- Structural bonding of metals and composites.
- Industrial equipment and fabricated assemblies.
- Fiberglass reinforced plastic (FRP) bonding.
- Plastic-to-metal and plastic-to-plastic assemblies.
- Gap-filling structural joints requiring toughness and peel resistance.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Technology | Methacrylate Adhesive | — | Two-Part Structural Adhesive |
| Appearance Part A | Pale Milky White | — | Resin Component |
| Appearance Part B | Light Tan | — | Hardener Component |
| Mix Ratio (A:B) | 1 : 1 | by Volume | Recommended ratio |
| Specific Gravity Part A | 1.04 | — | 25°C |
| Specific Gravity Part B | 0.96 | — | 25°C |
| Viscosity Part A | 80,000 - 110,000 | mPa·s (cP) | 25°C |
| Viscosity Part B | 45,000 - 70,000 | mPa·s (cP) | 25°C |
| Open Time | ≥20 | minutes | Room temperature |
After-Processing / Final-State Properties
| Property | Value | Unit | Condition / Method |
|---|---|---|---|
| Fixture Time | 20 - 25 | minutes | Room temperature cure |
| Maximum Gap Fill | 9.5 | mm | Non-sag structural adhesive |
| Lap Shear Strength (Etched Aluminum) | ≥20.6 | N/mm² | ISO 4587 |
| Lap Shear Strength (Anodized Aluminum) | 18 | N/mm² | ISO 4587 |
| Lap Shear Strength (Steel) | 17 | N/mm² | ISO 4587 |
| Lap Shear Strength (Stainless Steel) | 20 | N/mm² | ISO 4587 |
| Lap Shear Strength (Polycarbonate) | 6 | N/mm² | ISO 4587 |
| Block Shear Strength (ABS) | 7.2 | N/mm² | ISO 13445 |
| Block Shear Strength (PVC) | 1.2 | N/mm² | ISO 13445 |
| T-Peel Strength (Aluminum) | 3.8 | N/mm | ISO 11339 |
| VOC Content (Part A) | 41.4 | % | 2010/75/EC |
| VOC Content (Part B) | 62 | % | 2010/75/EC |





















