- Zinc & Yellow-Passivated for excellent corrosion resistance
- Hardened surface to improve resistance to Torque shearing under load
- 40o single thread providing a secure fixing with high pull-out resistance
- Deep Pozi-drive for easy, safe and positive driving
4.0x50mm general purpose, countersunk head screws suitable for a wide variety of uses including use with TOGGLER High Performance Anchors.