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
Tri-Groove
This fastener is widely available and lacks meaningful tool control or tamper resistance. While often marketed as a "security screw," it does not meet our standards for the security classification. It may deter casual tampering but offers very little protection against intentional removal.
Tri-Groove
Widely available; sold in stores and online.
Tri-Groove
Moderate; varies by size and material.
Tri-Groove
Low: Often available in small packs.
Tri-Groove
Low: Easily removed in minutes.
Tri-Groove
Low: Varies by supplier, size, and material.
Tri-Groove
Likely available from distributors.
Tri-Groove
Standard, not proprietary.
Tri-Groove
N/A: Bits widely available to public.
Tri-Groove
Button, flat, pan, socket; varies by supplier.
Tri-Groove
Steel, stainless steel (e.g., 304, 316), sometimes brass or zinc-plated—depends on supplier.
Tri-Groove
Reusable with matching bit; integrity depends on torque and material.
Tri-Groove
Low: Easily defeated with standard bits or modified tools.
Tri-Groove
Compatible with standard bits; widely available tools.
Tri-Groove
Manual or power-driven with bit; standard installation process.
Tri-Groove
Low: Recognizable shape signals basic security, not highly deterrent.
Tri-Groove
N/A: Tool/Bit is widely available.
Tri-Groove
N/A: Commonly stocked item.
Tri-Groove
