Manufacturer of the world's most secure fasteners

penta-plus set screw tamper-proof security fastener

Proprietary geometry. Controlled drivers.

Penta-Plus Set Screw


Controlled Bits

Driver bits restricted and controlled by Bryce Fastener.

The Penta-Plus design with the center rejection pin is a proprietary design meant for higher security applications and perfectly suited for security set screws.

One of our customers uses our Penta-Plus® set screws (10/32x1/4) to secure the cases their military weapons are stored and shipped in. If you need a set screw for an application that’s worth over $100.00, the Penta-Plus® Set Screw is your best option.

Available in sizes 2/56-1/2 (length cannot exceed the diameter).

Stainless Steel, Alloy, and Coated.

Configure Your Perfect Fastener

Fastener security — for everything possible.

Key-Rex can be made for 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 a Bryce fastener expert will recommend the perfect protection to fit your needs and budget.

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