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
Shear Bolts by Hafren Security Fasteners
The Shear Bolt uses a breakaway hex head that snaps off at a calibrated torque, leaving behind a smooth, ungrippable surface. It's a simple and effective design for creating permanent installations. Once installed, removal typically requires drilling or destructive force. However, the initial install is limited by access to torque tools, and over-tightening or under-tightening can reduce performance.
Shear Bolts
- Single-Use Security
- Utility Fixtures and Covers
- Clean, Tool-Less Finish
Shear Bolts
- Applications Requiring Reuse
- Precise Torque-Sensitive Installs
Shear Bolts
None: One-way design, shears after installation.
Shear Bolts
14-25nm
Shear Bolts
Not specified; likely moderate (e.g., 100 pieces).
Shear Bolts
Extremely high: Shears, resists all removal attempts.
Shear Bolts
$2.67 - $32.91
Shear Bolts
Not specified; likely available for bulk orders.
Shear Bolts
One-way shear design.
Shear Bolts
None: Shears, no removal tools.
Shear Bolts
Cylindrical (bolt head).
Shear Bolts
Steel, stainless steel; A2, A4 options.
Shear Bolts
Non-reusable; permanent installation.
Shear Bolts
Extremely high: Shear design prevents removal.
Shear Bolts
No tools for removal; shear design.
Shear Bolts
Manual or power-driven; shears after installation.
Shear Bolts
High: Shear design signals permanence.
Shear Bolts
None: No removal tools exist.
Shear Bolts
Not specified; likely 1–4 weeks.
Shear Bolts
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
