Ultra-Lok II by Loss Prevention Fasteners

Manufacturer Claim

Ultra-Lok II is a removable/re-usable high security fastener. The center stud and unique design make this one of the most secure fasteners available. The rounded shaped beveled sides prevents removal with conventional tools. Available in metric and inch sizes and various materials. Higher torque values, propitiatory drive, unique key pattern.

Ultra-Lok II by Loss Prevention Fasteners

What We Thought

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.

Good For

Commercial & Municipal Use
Tamper Resistance with Controlled Tool Access
Button Head Installations

Not Good For

Projects Needing Unique Keyways per User
Small-Scale or One-Off Installs

See Why

Product Facts

We compiled these "product facts" using publicly available information, expert analysis, and reasonable assumptions where data was incomplete. Some details (like pricing, torque specs, and break-in times) aren’t always disclosed, so we’ve filled in the gaps as accurately as possible.

For verified specs or specific use-case guidance, we recommend reaching out directly to the manufacturer.

Feature: Value
Driver Availability: Restricted: Tools not available to the public
Maximum Torque (MFR Claim): Not specified; likely moderate, similar to standard Torx-Pin or Hex-Pin.
Minimum Quantity: Not specified; likely moderate (e.g., 100 pieces).
Average Break-In Time: Not specified; likely high due to proprietary keyway.
Cost Per Fastener: Not specified.
Samples Available: Not specified; likely available for bulk orders.
Keyway Type: Unique oval shape with fins and a center pin.
Tool Control: Controlled: Bits restricted, but control is unknown.
Head Style Options: Not specified.
Material Options: Not specified.
Reusability: Reusable with matching bit; depends on drive type.
Tamper Resistance: High: Complex keyway resists standard tools, but less data on advanced attacks.
Tool Compatibility: Requires proprietary driver; incompatible with standard tools.
Installation Method: Manual or power-driven with proprietary driver.
Visual Deterrence Level: High: Unique design signals advanced security.
Removal Risk if Tool Leaks: Moderate: Controlled bits reduce risk.
Lead Time to Purchase: Not specified; likely stock items ship quickly.

About The Manufacturer

High security, tamper resistant, anti-theft, tamperproof and specialty fasteners. Loss Prevention Fasteners and our other divisions have been supplying fasteners of all types to industry dating back to 1978. The world is held together with nuts, bolts and screws. Loss Prevention Fasteners takes great pride in supplying distributors in more than 40 countries. Our can do attitude and approach to providing solutions for our customers results in a win / win partnership. It’s more than a track record of delivering high quality fasteners that makes Loss Prevention Fasteners a trusted brand. It is Stopping Theft Every Day and we understand that our business is dependent upon our customers and the industries we serve.