LOCTITE® 242

Name: LOCTITE® 242
Brand: LOCTITE

Features and Benefits

A medium-strength, medium viscosity, thixotropic threadlocking adhesive for metal thread sizes up to M36.

LOCTITE® 242 is a general purpose, medium strength, medium viscosity, anaerobic-curing threadlocking adhesive. It is thixotropic to prevent migration after application, and is perfect for fasteners requiring normal disassembly with standard hand tools.

Medium strength
Medium viscosity
Fast fixture
Thixotropic for ease of application

Documents and Downloads

Download TDS

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Technical Information

Chemical basis / base	Methacrylate
Color	Blue
Fixture time	5.0 - 20.0 min.
Key characteristics	Thixotropic
Recommended for use with	Metal: brass, Metal: steel, Metal: steel - stainless steel
Viscosity, Brookfield - RVF, @ 25.0 °C Spindle 3, speed 20 rpm, Helipath	800.0 - 1600.0 mPa·s (cP)

How to

Step by Step Guide

1. Preparation - Cleaning

It is recommended to use LOCTITE® SF 7070 to degrease and clean surfaces prior to applying LOCTITE 242 threadlocker.

2. Preparation - Activation

If cure speed is too slow due to passive metals (stainless steel, aluminum and plated metals) or low temperature (below 5°C), use activator LOCTITE® SF 7649 (see cure speed vs activator graph in the TDS).

3. Application

Apply liquid threadlocker to the engagement area. For manual dispensing, the use of a peristaltic handgun or the LOCTITE® Pro Pump is recommended to ensure a consistent application volume.

4. Application - Through-Hole

Insert bolt and apply threadlocker to the exposed thread. Assemble nut and tighten to the correct/specified torque.

5. Application - Blind Hole

Apply several drops of liquid threadlocker down the sides of the blind hole filling the lower third. Apply several drops to the bolt.

6. Assembly

Assemble and tighten. If several bolts are being assembled, torque them down to the correct value within the fixture.

7. Disassembly - Hand Tools

Disassemble with standard hand tools.

Hint

For the disassembly of corroded or seized parts use LOCTITE® LB 8040 Freeze and Release.

Frequently Asked Questions

Prevent vibration loosening, prevent leaks, protect threaded components from corrosion and increase the reliability of mechanical fasteners by using a LOCTITE® anaerobic threadlocking adhesive.

The standard continuous operating temperature range for LOCTITE® anaerobic adhesives is -55˚C to +150˚C.Depending on the specific application requirements, high-performance grades are also available offering increased temperature resistance. Please consult with the Henkel technical team for availability and grade selection.

Yes, LOCTITE® anaerobic adhesives and sealants become highly resistant thermoset polymers once cured, making them suitable for a vast number of applications. Consult our online product resources or contact our technical teams for further information.

Yes, these products are all anaerobic adhesives that will function in a similar way. Variations in the adhesive characteristics (viscosity, gap-fill, strength etc.) will make them better suited to certain applications. Consult the product technical data sheets and/or LOCTITE® representatives for further information.