LOCTITE Threadlocker Blue 242 – Medium Strength Removable Thread Lock Adhesive for Bolts, Nuts, and Screws – Prevents Loosening, Vibration, and Corrosion – 6 ml Tube
- PROTECTS AGAINST VIBRATION: LOCTITE Threadlocker Blue 242 secures nuts and bolts, preventing them from loosening due to shock and vibration.
- MEDIUM STRENGTH FORMULA: Designed for 6mm to 19mm fasteners; allows for easy disassembly with standard hand tools when maintenance is required.
- PREVENTS CORROSION: Seals threaded parts to lock out moisture, preventing rust, leaks, and thread damage.
- VERSATILE APPLICATION: Ideal for use on passive metals like stainless steel and plated surfaces; perfect for automotive, mower, and power equipment repairs.
- FAST CURING TIME: Fixture time of 10-20 minutes with a full cure in 24 hours for a strong, durable bond.
Product Description
Ensure the longevity and safety of your assemblies with LOCTITE Threadlocker Blue 242. This professional-grade, medium-strength adhesive is engineered to secure threaded fasteners and prevent loosening caused by vibration and shock. Ideally suited for fasteners ranging from 6mm to 19mm, this formula is a staple for automotive repair, industrial machinery, and household maintenance.
Why Choose LOCTITE Blue 242?
Unlike mechanical lock washers that can fail under stress, this threadlocker cures to form a tough, thermoset plastic solid that fills the voids between threaded metals. It effectively seals out moisture and other contaminants, preventing rust and corrosion on threads. The medium-strength formula allows for disassembly with standard hand tools, making it perfect for parts that require future maintenance or servicing.
Key Applications:
This versatile adhesive excels on a variety of materials, including passive substrates like stainless steel, aluminum, and plated surfaces. It is the go-to solution for small motors, lawn mowers, power equipment, and automotive engine bolts.
Product Features:
- Medium Strength: Designed for fasteners up to 20mm (3/4 inch) that require future disassembly.
- Vibration Resistance: Locks threads securely to prevent loosening from machine vibration and shock.
- Rust & Corrosion Protection: Seals threads to prevent leakage, rusting, and corrosion.
- Quick Setting: Sets in approximately 10 to 20 minutes and fully cures in 24 hours.
- Versatile Use: Compatible with all active metals, including stainless steel and plated surfaces.
Trust the industry standard to keep your projects together. Whether you are repairing a car engine, fixing a lawnmower, or assembling heavy machinery, LOCTITE Threadlocker Blue 242 delivers reliability you can count on.


















