Breakaway Nuts
Details
Hex nut breaks away when nut is tightened, leaving only the tamper-resistant conical portion of the fastener remaining. No special tool is required when using these aluminum breakaway pins. Also, these breakaway nuts use a standard wrench for installation. These conical backing nuts should be considered non-removable. And if you are looking for screws with a unique design, featuring two drilled spanner holes, take a look at the Snake Eyes® spanner screws.