Permabond® HM128 Threadlocker is a high strength adhesive for permanent assembly. It is typically used for preventing vibration loosening of bolts, studs and cap screws. Full cure to a cross-linked plastic is achieved reliably and fast on steel and all common bolt platings. Additional application areas include machinery, equipment, and electric motor manufacturers. PERMABOND® HM128 Threadlocker replaces lock washers.
Key Features
- Prevents vibration loosening
- Controlled off-torque
- Permanent thread-locking
- Full cure at room temperature
- Lubricates threads for easier assembly
- Provides corrosion protection
- Superior environmental resistance
- Environmentally friendly – 100% solids
| Property | Value |
| Chemical composition | Methacrylate esters |
| Appearance | Red |
| Viscosity @ 25°C | 500 mPa.s (cP) |
| Specific gravity | 1.1 |
| UV fluorescence | Yes |
| Property | Value |
| Maximum gap fill Maximum thread size |
0.15 mm 0.006 in M20 ¾” |
| Time taken to reach handling strength (M10 steel) @23°C |
15 minutes* |
| Full strength (M10 steel) @23°C | 24 hours |
