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
KEY-REX by Bryce Fastener
The KEY-REX by Bryce Fastener stands out as the top choice among security fasteners, excelling across multiple evaluation factors. Offering top-tier tamper-proof security with a globally patented design concept that restricts removal to the owner alone. Unavailable in stores, its specialized approach shines.
KEY-REX
- High Value Applications
- High Risk/Liability Applications
- Isolated Installations (more time to circumvent)
KEY-REX
- DIY Projects
- If you need it today
- 3rd Party Installation
KEY-REX
Restricted: Custom driver bits, unique to each customer, not sold in stores. Controlled via serialized database.
KEY-REX
~136 in/lbs for 1/4-20x1 and ~140 in/lbs with Raptor Head.
KEY-REX
2,500 piece minimum, smaller minimum for large bolts.
KEY-REX
Extremely high: “Nearly impossible” without custom bit; rare breaches take significant time.
KEY-REX
$0.60 - $16.00. Varies by size, quantity, and material. Plus a one time licensing fee.
KEY-REX
Not stated; custom design implies possible samples.
KEY-REX
Custom-encrypted, 53 billion variations, unique per customer.
KEY-REX
Strict: Serialized bits, tracked, restricted to original purchaser. Verification for replacements.
KEY-REX
Button, flat, socket, customizable with Raptor™ head.
KEY-REX
302 and 316 stainless steel. 8740 Alloy, heat-treated alloys and custom coatings.
KEY-REX
Reusable with matching bit; high torque maintains integrity.
KEY-REX
Extremely high: Repels Vice-Grips, drills; sloped head, large rejection pins.
KEY-REX
Requires custom Key-Rex® bit; incompatible with standard bits (Torx, Hex).
KEY-REX
Power-driven or manual with custom bit.
KEY-REX
High: Low-profile, sloped heads signal difficulty; custom keyway exclusivity.
KEY-REX
Low: 53 billion keyway variations, strict bit control.
KEY-REX
4-6 weeks.
KEY-REX
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
