PENTA-PLUS by Bryce Fastener

Manufacturer Claim

Pentagon design is configured to keep out Torx-Pin, Hex-Pin and all other tamper-resistant bits. Only available to Bryce Fastener™ customers and bits are controlled through our customer database. Next to KEY-REX®, PENTA-PLUS™ is your best tamper-proof option on the market.

Unique geometry and controlled availability
Low profile head
Custom torque grip via "Raptor Claw"

What We Thought

Penta-Plus™ screws offer a robust tamper-resistant solution with a proprietary pentagon drive designed to resist standard tamper-resistant bits. The low-profile button head design deters gripping tools like locking pliers, and the optional Raptor™ Claw feature enhances torque resistance by embedding into the substrate. While the drive pattern is proprietary and bits are controlled by Bryce Fastener, the lack of unique keyways per customer may limit their suitability for applications requiring the highest level of security.

Good For

Commercial Installations
Municipal Infrastructure
Situations Requiring Enhanced Tamper Resistance

Not Good For

High-Security Applications Requiring Unique Keyways
Installations Demanding Maximum Tamper-Proofing
DIY Projects or Immediate Availability Needs

See Why

Product Facts

We compiled these "product facts" using publicly available information, expert analysis, and reasonable assumptions where data was incomplete. Some details (like pricing, torque specs, and break-in times) aren’t always disclosed, so we’ve filled in the gaps as accurately as possible.

For verified specs or specific use-case guidance, we recommend reaching out directly to the manufacturer.

Feature: Value
Driver Availability: Restricted: Proprietary Penta-Plus™ bits, only available to Bryce customers, controlled via database.
Maximum Torque (MFR Claim): 132 in/lbs for ¼-20x1. Raptor™ head adds 20% more torque.
Minimum Quantity: 2,500 piece minimum, smaller minimum for large bolts.
Average Break-In Time: Very high: Resists Torx-Pin, Hex-Pin; requires proprietary bit.
Cost Per Fastener: $0.50 - $15.00. Varies by size, quantity, and material.
Samples Available: Not stated; likely available for custom orders.
Keyway Type: Pentagon-based, resists standard tamper-proof bits.
Tool Control: Strict: Bits exclusive to Bryce customers, controlled distribution.
Head Style Options: Button, flat, socket, set screws; customizable with Raptor™ head.
Material Options: 302 and 316 stainless steel. 8740 Alloy, heat-treated alloys and custom coatings.
Reusability: Reusable with Penta-Plus™ bit; high torque maintains integrity.
Tamper Resistance: Very high: Pentagon design repels standard tools.
Tool Compatibility: Requires Penta-Plus™ bit; incompatible with standard bits.
Installation Method: Power-driven or manual with Penta-Plus™ bit.
Visual Deterrence Level: High: Pentagon design signals advanced security.
Removal Risk if Tool Leaks: Low: Controlled bit distribution reduces risk.
Lead Time to Purchase: 4-6 weeks, stock items faster.

About The Manufacturer

Founded in 1972, Bryce Fastener, Inc., opened its doors as a fastener distributor in Seattle, WA. For the next 20 years, Bryce provided manufacturers, retail stores and other businesses with all types of screws, bolts, and nuts.

By the early 1990s, the more popular types of tamperproof fasteners were no longer being produced by American manufacturers. With the help of WSR Manufacturing, the first prototype of our Key-Rex® drive was developed. This was a clear turning point—Bryce Fastener needed to further develop and perfect security screws, bolts, and nuts.

By re-engineering cold-forging machines, developing new manufacturing techniques and processes, Bryce Fastener has set a new standard, both in security innovation and in the way security fasteners are made. Today, the talented team at Bryce Fastener are true American craftsmen, producing the most secure fasteners in the world.

Where to Buy

All set to buy the PENTA-PLUS by Bryce Fastener? No worries, we are here to sort this out for you.

Not Available in stores.
Order directly from the manufacturer.

Get Pricing on brycefastener.com

Or call (480) 503-3801

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