Manufacturer of the world's most secure fasteners

Patented | Never in Stores

Security. Personalized.

KEY-REX® Custom Manufactured Security Bolts, Screws & Nuts

Exclusive-to-you design that’s engineered for zero-theft.
100% made-to-order, right here in Gilbert, Arizona.

Key-Rex® Bolt & Driver Bit Shown with one of over 55 billion possible Key-Rex® drive configurations.

As unique as your fingerprint.

More secure than any tamper-proof screw on the market.

The Key-Rex® fastener can’t be removed without its perfectly matched driver bit.

unique tamperproof keyway by Bryce Keyways anti theft a wide variety of keyways
transportation manufacturer

Customer Testimonial

It’s uniquely our own — only we have the key.

I never knew we could have security screws with a drive designed specifically for our company. Key-Rex saves us time, money, and headaches, no longer having to constantly replace stolen and damaged items. Thank you for helping me impress my boss!

Jim Haskins Product EngineerTransportation Manufacturer
Dearborn, Michigan

Total Control.KEY-REX® You control how many keys there are and ever will be.

Any Industry.

The value of custom security pays for itself.

If you've ever had a loss, you know.

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Any Security Need.

Choose the right security fastener for your unique application.

Patented Drives Only Available from Bryce Fastener | Never Sold in Stores

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locking custom screws bolts security nuts fasteners and much more, all made right here in the USA with that quality American craftsmanship our customers need, you can trust & remain confident that since we craft our own products that each product is designed perfectly & guaranteed to keep your property protected from common thieves, you can trust Bryce for your fastener needs

Tamper Proof Fasteners, Security Screws, Theft Resistant Nuts, and Locking Bolts

All tamper-proof screws are not created equal. The problem with most other security screws is that they are not actually as secure as one might think.

The fact is, except for Bryce Fastener's, most so-called “tamper proof screws” aren’t tamper-proof at all. Anyone can go into almost any hardware store and buy drivers to screws most people believe are secure, locking, and tamper-proof. There are even commonly available drivers to remove those so-called “one-way security screws”. So what is your alternative? Truly unique tamper proof screws made by Bryce Fastener.

Bryce is a U.S. custom screw manufacturer located in Gilbert, Arizona. The tinker proof security screws, tamper-proof bolts, tamper-resistant screws, security nuts and other security fasteners Bryce manufactures are simply the finest in the world. Tamper-proof security fasteners is all we manufacture.

All Industries Can Benefit

Virtually every industry, from retail stores to governmental security has issues with theft, loss prevention and vandalism. Many of them, after suffering serious losses, put an end to their issues with Bryce Fastener’s tamper proof screws, nuts, and bolts. Bryce security fasteners are used to secure everything from the interal workings of a medical device with our miniature fasteners, all the way up to gas and oil pipelines with our Key Rex Structural Nut with security cap. We have even developed the absolute best concrete security screws on the planet. Best of all, if you don't see a fastener on our site that fits your need, we'll design one for you. After all, we are the maufacturer, and we have the finest designers in the industry.

Many Electronics Manufacturers

Many electronics manufacturers and product engineers need affordable, effective means to tamper proof components from prying hands, tools and eyes. They find the Bryce Key Rex security screws and security nuts nearly 100% effective in their applications, down to the tiniest of screw sizes. This is essential in protecting themselves from liability. It’s also important when they need to keep proprietary information out of the hands of others.

Retail Organizations

Retail organizations need simple, effective, affordable means to prevent loss from theft and wreckage of their products and premises. Bryce tinker proof security fasteners have prevented countless cases of loss at stores around the world.

Universities Everywhere

Universities everywhere protect costly classroom equipment with the world’s finest and most unique anti-theft security screws, tamper proof nuts and bolts made by Bryce. Time after time, we receive reports from schools when they discover all the screws removed from a securing device except the one or two security bolts from Bryce. Those one or two bolts were all that was needed to prevent costly items from being detatched and carried away. We've also heard of cases where a few Bryce security wood screws saved the day, such as when they were the only things that kept several wooden benches from ending up in the school pond.

Utility Companies

Utility companies rely on Bryce tamper resistant screws and tamper proof bolts to prevent theft of expensive equipment such as miles of copper wire. They also rely on large numbers of Penta Bolts and tamperproof screws from Bryce to effectively prevent manhole covers and other access points from being breached.

Bryce security screws should be your best first line of defense against loss, theft, unauthorized entry and destruction of property. Bryce manufactures some of the only truly tamper proof screws in the world. If Bryce doesn’t have what you’re looking for, give us a call. We custom design and manufacture screws and other security fasteners to fit almost any need.