TONSAN 1242 is a blue, medium-strength general-purpose anaerobic threadlocker for nuts, bolts and screws from 6 to 20 mm. It cures in the absence of air in contact with metal, filling the thread gap to prevent loosening, leakage and corrosion. FEYANA supplies TONSAN 1242 and can help you select the right grade for your application.
Key features
- Blue, medium strength, general purpose
- Thixotropic viscosity
- For threads from 6 mm to 20 mm
- Removable with hand tools
- Fills 100% of the thread gap; stable friction helps compensate torque loss
- Conforms to MIL-S-46163A and JB/T7311-2008
Technical data
| Color | Blue |
|---|---|
| Specific gravity (g/cm3) | 1.10 |
| Viscosity (mPa·s) | 1400/Thixotropic |
| Gap fill (mm) | 0.13 |
| Break torque (N·m) | 12.0 |
| Prevail torque (N·m) | 5.0 |
| Fixture time (min) | 20 |
| Fully cured time (h) | 24 |
| Temperature range (℃) | -60~150 |
Applications
- Locking nuts, bolts and screws 6–20 mm
- Wind turbine bolt locking
Packaging: 50ml/bottle (Order no. 124201); 250ml/bottle (Order no. 124205)
Data are typical values from the manufacturer’s literature. Contact us for the TDS/SDS and selection advice.
Contact FEYANA: WhatsApp/Zalo +84 988 641 591 – sales.00@feyana.com



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