Security Fastener
Our Thoughts
Good For
Not Good For
Driver Availability
Maximum Torque (MFG Claim)
Minimum Quantity
Average Break-In Time
Cost Per Fastener
Samples Available
Keyway Type
Tool Control
Head Style Options
Material Options
Reusability
Tamper Resistance
Tool Compatibility
Installation Method
Visual Deterrence Level
Removal Risk if Tool Leaks
Lead Time to Purchase
Where to Buy
One-Way
This classic one-way design installs with a standard flathead but resists removal by camming out in reverse. It's low-cost, widely available, and simple to install—but also easy to defeat with pliers, extractor tools, or modified drivers. While it provides basic deterrence, it’s not suitable where determined tampering is a concern.
One-Way
- Low-Cost Deterrence
- Indoor Fixtures
- Short-Term Security
One-Way
- High-Security Installations
- Outdoor or Public Exposure
- Resistance to Basic Tools
One-Way
Widely available: One-way removal tools accessible to public.
One-Way
~85 in/lbs for 1/4-20x1
One-Way
Not specified; likely low (e.g., 100 pieces).
One-Way
Moderate: Removal possible with specialized tools.
One-Way
As low as $0.04
One-Way
Not Likely.
One-Way
One-way slotted drive.
One-Way
Minimal: Removal tools available to public.
One-Way
Button.
One-Way
Steel, stainless steel, brass.
One-Way
Non-reusable; one-way design.
One-Way
Moderate: One-way design resists casual tampering but not specialized tools.
One-Way
Compatible with one-way removal tools.
One-Way
Manual; one-way installation.
One-Way
Moderate: One-way drive signals tamper resistance.
One-Way
High: Removal tools increase risk.
One-Way
Not specified; Stock items ship quickly.
One-Way
Ultra-Lok II by Loss Prevention Fasteners
The Ultra-Lok II® features a proprietary keyway with a robust center stud, adding strong protection against tampering with standard tools. Tools are restricted and require authorization to purchase, increasing control—but not eliminating the possibility of eventual tool access. The button head design also limits grip area for pliers, especially when paired with proper torque. Minimum order quantities may limit use for small projects, but this fastener offers solid mid-tier security where distribution control is important.
Ultra-Lok II
- Commercial & Municipal Use
- Tamper Resistance with Controlled Tool Access
- Button Head Installations
Ultra-Lok II
- Projects Needing Unique Keyways per User
- Small-Scale or One-Off Installs
Ultra-Lok II
Restricted: Tools not available to the public
Ultra-Lok II
Not specified; likely moderate, similar to standard Torx-Pin or Hex-Pin.
Ultra-Lok II
Not specified; likely moderate (e.g., 100 pieces).
Ultra-Lok II
Not specified; likely high due to proprietary keyway.
Ultra-Lok II
Not specified.
Ultra-Lok II
Not specified; likely available for bulk orders.
Ultra-Lok II
Unique oval shape with fins and a center pin.
Ultra-Lok II
Controlled: Bits restricted, but control is unknown.
Ultra-Lok II
Not specified.
Ultra-Lok II
Not specified.
Ultra-Lok II
Reusable with matching bit; depends on drive type.
Ultra-Lok II
High: Complex keyway resists standard tools, but less data on advanced attacks.
Ultra-Lok II
Requires proprietary driver; incompatible with standard tools.
Ultra-Lok II
Manual or power-driven with proprietary driver.
Ultra-Lok II
High: Unique design signals advanced security.
Ultra-Lok II
Moderate: Controlled bits reduce risk.
Ultra-Lok II
Not specified; likely stock items ship quickly.
Ultra-Lok II
