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Compare Security Fasteners

When choosing the right security fastener, not all options offer the same level of protection, reliability, or installation control. In this comparison, we break down two standout products side-by-side to help you evaluate their strengths, limitations, and ideal use cases. Whether you’re securing high-value infrastructure or simply looking to deter casual tampering, understanding how these fasteners differ can make all the difference.

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

The Intimidator by McGard

The Intimidator by McGard

The Intimidator offers solid tamper resistance with proprietary key patterns and regional key code tracking. However, the exposed head shape makes it easier to grip with common tools like locking pliers, which may be a concern in higher-risk environments. While the drive pattern is proprietary, it isn’t unique per customer. It’s still a practical choice for shared-access applications like municipal or utility use—but not the strongest option for physical tamper resistance.

The Intimidator
  • Municipal & Utility Use
  • Multi-User Access Points
The Intimidator
  • Unique, One-of-a-Kind Keyway Needs
  • Highest-Security Applications
  • DIY or Same-Day Projects
The Intimidator
Restricted: Proprietary drivers, distributed to authorized users. Control mechanisms unclear. The Intimidator
Not specified; likely high for automotive applications. The Intimidator
Not specified; likely higher for custom orders. The Intimidator
Not specified; likely high due to proprietary keyway. The Intimidator
Not specified. The Intimidator
Not specified; automotive focus suggests samples for bulk buyers. The Intimidator
Proprietary pattern (likely annular or complex geometry), not quantified in variations. The Intimidator
Controlled, but no details on serialization or verification. Likely distributor-based. The Intimidator
Primarily conical or cylindrical (lug nut/bolt styles). The Intimidator
Stainless steel, zinc-plated steel typical for automotive. The Intimidator
Reusable with proprietary driver; designed for repeated automotive use. The Intimidator
High: Complex keyway resists standard tools, but less data on advanced attacks. The Intimidator
Requires proprietary McGard driver; incompatible with standard tools. The Intimidator
Manual or power-driven with proprietary driver; standard for lug nuts/bolts. The Intimidator
Moderate: Recognizable as security fasteners, but automotive focus may reduce uniqueness. The Intimidator
Moderate: Proprietary but fewer variations; risk depends on driver distribution. The Intimidator
Not specified; likely 1–4 weeks for custom, faster for stock. The Intimidator

Not Available in stores.
Order directly from the manufacturer.

How to buy: spd@new.mcgard.com

Or call 1-888-888-9192
The Intimidator

Tri-Groove 

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
  • General Fastener Use
Tri-Groove
  • Security Use
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

Available in stores.
Order online.

Purchase from Grainger

Tri-Groove

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