Maximum torque transfer & positive tool engagement means easier drive installation with less pressure & slippage. Torx® Pin-Head offers a high degree of security & requires a matching driver bit. These Torx tamper-resistant screws are available in: Button Head and Flat Head Machine and Sheet Metal Screws, and in Pan Head Self-Drilling Screws. Stainless steel Torx security screws only. Similar to the generic 6-Lobe.