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
Penta-Bolts
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.
Penta-Bolts
Widely available; sold in stores and online.
Penta-Bolts
Moderate; varies by size and material.
Penta-Bolts
Low: Often available in small packs.
Penta-Bolts
Low: Easily removed in minutes.
Penta-Bolts
Low: Varies by supplier, size, and material.
Penta-Bolts
Likely available from distributors.
Penta-Bolts
Standard, not proprietary.
Penta-Bolts
N/A: Bits widely available to public.
Penta-Bolts
Button, flat, pan, socket; varies by supplier.
Penta-Bolts
Steel, stainless steel (e.g., 304, 316), sometimes brass or zinc-plated—depends on supplier.
Penta-Bolts
Reusable with matching bit; integrity depends on torque and material.
Penta-Bolts
Low: Easily defeated with standard bits or modified tools.
Penta-Bolts
Compatible with standard bits; widely available tools.
Penta-Bolts
Manual or power-driven with bit; standard installation process.
Penta-Bolts
Low: Recognizable shape signals basic security, not highly deterrent.
Penta-Bolts
N/A: Tool/Bit is widely available.
Penta-Bolts
N/A: Commonly stocked item.
Penta-Bolts
