Henkel LOCTITE AA 329 (315-ml-Cart)

Additional Product Information

Overview

LOCTITE AA 329 is a high-performance structural acrylic adhesive used extensively in aviation and MRO (Maintenance, Repair, and Overhaul) applications for bonding steel and aluminum components. It is relied upon by maintenance teams for its rapid room-temperature cure, exceptional shear and tensile strength, and robust chemical and thermal resistance, making it ideal for applications requiring high reliability under repeated or continuous loads.

Key Technical Specs for LOCTITE AA 329

• Type: Acrylic, modified methacrylate ester
• Appearance: Straw yellow to brown liquid (uncured)
• Viscosity/Consistency: Medium, 15,000 38,000 cP (Brookfield RVT, 25 C, Spindle 6, 20 rpm)
• Cure/Working Time: Room temperature with Activator 737 or 7386; fixture in 24 72 hours depending on bond gap and substrate
• Tensile Strength: 26 N/mm (?3,770 psi) on grit-blasted steel
• Lap Shear Strength: ?15 N/mm (?2,900 psi) on grit-blasted steel
• Service Temperature: -50 C to 150 C (-58 F to 302 F)
• Typical Uses: Structural bonding of steel and aluminum components, metal furniture, containers, doors
• Shelf Life: Store 2 C to 8 C (36 F to 46 F); avoid contamination and temperature extremes

Approvals & Specifications

• Henkel internal quality standards (LMS)
• ISO 4587 lap shear testing
• ISO 6922 tensile testing
• Compliance with standard chemical and thermal resistance tests

Typical Aircraft MRO / AOG Applications

• Structural panel bonding for fuselage sections
• Interior cabin components and metal fixtures
• Repair and reinforcement of metal brackets and supports
• Fast turnaround bonding during aircraft on-ground (AOG) events

Compatibility & Safety Notes

• Substrate Compatibility: Steel, aluminum; limited use on plastics compatibility testing recommended
• Use PPE: Gloves and eye protection when handling
• Handling Notes: Surfaces must be clean and free of grease; avoid oxygen-rich environments
• Activator Use: Apply Activator 737 or 7386 to one or both surfaces for optimal cure

Packaging & Procurement

• Packaging: Available in standard industrial containers
• Storage: Keep sealed, dry, and between 2 C to 8 C (36 F to 46 F)
• Ease of Use: One-component system requires no mixing; easy application and cleanup with organic solvent

Why LOCTITE AA 329 is Chosen for AOG / MRO

• Fast room-temperature cure accelerates aircraft return to service
• High mechanical strength ensures reliable repairs under repeated load
• Versatile across multiple substrates, with chemical and thermal resistance
• Portable and easy to handle for on-site MRO and AOG tasks

Practical Suggestions for Your Team (AOG Mindset)

• Stock adequate quantities for rapid repair scenarios
• Pre-clean bonding surfaces for optimal adhesion
• Train maintenance personnel on proper Activator application
• Clamp parts during fixture time to ensure full bond strength
• Verify compatibility on any non-metal substrates before use

Manufacture / Aviation Spec Codes

• Manufacturer: Henkel Corporation
• Product ID: LOCTITE AA 329
• MIL/OEM/Export Codes: Refer to Henkel LMS for batch-specific QC test reports

Alternative Names & Descriptions

• Henkel AA 329 Structural Adhesive
• LOCTITE Acrylic Adhesive 329
• AA 329 Steel Bonding Adhesive
• Henkel Modified Methacrylate Adhesive
• LOCTITE High-Strength Acrylic