Manufacturer of the world's most secure fasteners

penta plus theft proof security bolts fasteners

Patented | Never in Stores


The Perfect Mix of Security, Exclusivity, and Affordability

Neither the bits nor the screws are available to the public. Patented in the U.S. and Worldwide for over 25 years.

  • As Few As# 25 PCS
  • Commonlyupdate In-stock
  • Maximum Securitylock_outline controlled access

$100 minimum purchase required.

25 Years of Satisfied Customers

Unique geometry and controlled availability make for the perfect fastener when off-the-shelf security isn’t enough.

Low-Profile Head Deters Tampering

The obvious tactic to defeat a bolt or screw is to simply “grip it” and remove it. The sloped, low-profile Bryce button head shape repels tampering tools. Locking pliers simply can’t get a hold of the sidewall like other screws.

Meets all IFI specifications. Order with confidence.

20% More Torque with Raptor™ Claws

Right out of the box, every Bryce security fastener boasts higher torque capability than competitor fasteners. But it gets better. Add Raptor™ and achieve even more torque — 20% more! Specially designed Raptor™ “claw” serrations on the under side of the head cut and dig into the metal substructure surface, effectively creating a “lock”, resulting in more security and more confidence.

Customer Testimonial

65,000 Screws.
Zero Theft.

“I've bought thousands of Bryce security screws for our pull-box products that secure buried copper wiring. In over a decade we haven't had a single reported breach. None. I attribute that to the fact that Bryce fasteners aren't sold on the open retail market and they're engineered to repel every knock-off tool out there.”

Dan King
MR Steel Security Lids


Turn any bolt into a lock.

Penta-Nut is the largest diameter security nut available, and with the added Raptor™ Security Head, no washer is needed.

And in an application where bolt threads are exposed, combine Penta-Plus™ Bolt with Penta-Nut for the highest level of security.

More about Penta-Nut™

Configure Your Perfect Fastener

Fastener security — for everything possible.

Bryce Security Fasteners can be made in virtually any fastener type, any size, any metal, any coating, and more. From galvanized metric bolts for harsh coastal outdoor environments to heat-treated, micro screws for data center security.


Whatever you’re working on, Bryce has you covered.

Tell us about your project and an expert will recommend the perfect protection to fit your needs and budget.

Get Started

Bolts & Screws

Choose the right screw for your needs.

Compare our other exclusive security fasteners. Never sold in stores.