Loctite Medium-Strength Anaerobic Threadlocker Stick — Blue 19 g, Removable & Drip-Resistant

Loctite 504466 is a blue, medium-strength anaerobic threadlocker in a convenient 19 g stick designed to lock and seal metal fasteners while remaining removable when needed.

This compact, wax-style thread-locking stick was formulated for general-purpose maintenance and automotive use where a reliable hold, drip resistance and easy application are important. The anaerobic chemistry cures in the absence of air between closely mated metal surfaces, producing a dependable bond on a wide range of metals — including passive substrates such as stainless steel and aluminum. It also tolerates light oil residues from motor oils or cutting fluids, letting technicians apply it in less-than-perfect surface conditions.

How quickly does the threadlocker set and reach full strength?

The product begins handling in about 10 minutes and achieves its rated, full strength within 24 hours under typical conditions. Curing speed depends on gap size, metal type and temperature; close-fitting threads, higher temperatures and stainless or copper-containing metals accelerate cure.

• Handling time: ~10 minutes
• Full strength: up to 24 hours
• Faster cure on tight fits and warmer environments
• Anaerobic cure requires contact between metal surfaces

Which fasteners and applications is this wax glue stick best suited for?

Designed for nuts and bolts from roughly 6 mm to 19 mm (1/4" to 3/4"), this medium-strength formulation is ideal for common automotive and maintenance tasks where repairability is desired. Typical uses include valve cover bolts, water pump fasteners, caliper brackets and general machinery assembly where a secure but removable lock is required.

• Compatible fastener range: 6–19 mm (1/4"–3/4")
• Common uses: automotive and light maintenance
• Removable with hand tools or controlled heat
• Good for overhead and drip-prone applications

Will it work on stainless steel, aluminum or oily parts?

Yes — the formula bonds to a broad set of metal substrates, including passive metals such as stainless steel and aluminum, and it tolerates minor oil contamination. For best results, remove heavy oils, paint or heavy rust; light residues will often not prevent the adhesive from curing and functioning as intended.

• Adheres to passive metals like stainless steel and aluminum
• Tolerates minor oil or cutting-fluid residue
• Not recommended for heavily contaminated surfaces without cleaning
• Works on all common metal fasteners used in vehicles and equipment

How is this stick applied and removed during repairs?

The solid stick format allows for precise, drip-free application directly to threads or into bolt holes, reducing mess on overhead jobs. Removal is possible with typical hand tools, impact, or controlled heat if rework is needed, consistent with medium-strength anaerobic adhesives.

• Solid, non-drip stick for neat application
• Apply directly to thread surfaces or bolt shanks
• Removable using standard tools or heat-assisted methods
• Good for repetitive service where disassembly is expected

Who is this for: Technicians, garage mechanics and maintenance professionals who need a dependable, easy-to-handle threadlocker for everyday automotive and equipment fasteners will find this Loctite stick useful. It’s especially helpful when you want a medium-strength lock that performs on a variety of metals, handles light oil contamination, prevents dripping during overhead work and remains serviceable for future disassembly.

Fit type: Vehicle Specific.