Loctite Threadlocker Blue - 242 6 ml, 1 Pack
Loctite Threadlocker Blue 242 (6 ml) — Removable, Medium-Strength Thread Lock
(6 ml)
Loctite Threadlocker Blue 242 is a medium-strength, removable thread-locking adhesive engineered to lock and seal metal fasteners (6–19 mm). It prevents nuts and bolts from loosening under vibration, reduces leaks, and protects threads from rust and corrosion — while still allowing removal using common hand tools.
Buy NowWhy choose Loctite Threadlocker Blue 242?
Whether you’re servicing a small motor, repairing garden equipment, or performing routine maintenance, Threadlocker Blue 242 gives you a reliable, medium-strength bond that keeps fasteners secure without permanently locking them. Key benefits include:
- Locks and seals metal fasteners to prevent loosening caused by vibration.
- Protects against rust and corrosion, extending the life of threaded components.
- Removable with hand tools, providing serviceability when maintenance is required.
- Fast-acting — sets in about 10 minutes and fully cures in 24 hours.
- Formulated for 6–19 mm fasteners (suitable for many common nuts and bolts).
Product Specifications
Loctite Threadlocker Blue 242
6 ml (single pack)
Medium (removable)
6–19 mm nuts & bolts
~10 minutes
24 hours
How to apply Loctite 242 — quick step-by-step
- Clean the threads: Remove oil, dirt, and old sealant. Use a degreaser or solvent if needed and let dry.
- Apply product: Dispense a few drops of Loctite 242 onto the male threads or into the nut.
- Assemble fastener: Thread the bolt into place and tighten to the required torque for the application.
- Allow to set: Initial handling set in ~10 minutes. Full strength is reached after 24 hours.
- For future removal: Use common hand tools to remove the fastener when needed — Loctite 242 is removable by design.
Tip: Use only the amount needed to avoid excess squeeze-out. For applications requiring permanent locking, consider high-strength alternatives.
Recommended applications
- Small electric motors and gearboxes
- Garden & lawn equipment (mowers, trimmers)
- Power tools and construction equipment
- Automotive fasteners that may require later service
- General machinery and maintenance where vibration is present
Frequently Asked Questions
- Is Loctite 242 permanent?
- No — 242 is a medium-strength, removable threadlocker designed for serviceable assemblies. It will hold fasteners firmly but allows removal with hand tools.
- How fast does it work?
- It sets in approximately 10 minutes and reaches full cure in about 24 hours under normal conditions.
- Will it protect against rust?
- Yes — the formula helps seal threads and reduce the risk of rust and corrosion.
- What bolt sizes are suitable?
- It’s intended for use on 6–19 mm nuts and bolts (typical medium-sized fasteners).
Bottom line
Loctite Threadlocker Blue 242 (6 ml) is an excellent, versatile choice when you need a reliable, medium-strength threadlocker that prevents loosening and corrosion while still allowing future removal with hand tools. Fast-setting and easy to use — it’s a staple for maintenance kits and professional toolboxes.
