Our patented Ultra-Lok S7 nuts are a great, very high security alternative to other tamper-resistant nuts. These anti-theft nuts work perfectly in tight fit situations with their internal drive slot, meaning that you can install these in spaces as small as the nuts outside diameter.


The seven-sided heptagon has many points of engagement that offer an extremely high torque value, allowing for more ease of use. The drive of these nuts hides in plain sight, and when installed they appear to have no mechanical method of removal. Another bonus of using our Ultra-Lok S7’s are the patented removal tools which are proprietary to us, so you can rest assured knowing that you are operating at a very high level of security.

These security nuts are made of a durable 316 stainless steel, making them sturdy and resistant to chemicals, as well as salt water and rain.

For more information regarding the Ultra-Lok S7 nuts, or any other high security, anti-theft, or tamper proof fastener please give us a call. We are here to support you with any projects and or questions you may have.