Manufacturer of the world's most secure fasteners

penta-nut tamper-resistant security

PATENTED HIGH-SECURITY LEVEL

Penta-Nut™

Exclusive to Bryce Customers

Like a Lock

Penta-Nut™ is the largest diameter security nut available, and with the added Raptor™ Security Head, no washer is needed. These High-Security 316 stainless steel tamper proof nuts turn any bolt into a lock.

  • The deep socket allows overrun of bolt
  • Cone shape repels locking pliers
  • Compression ring binds and seals
  • Patents in U.S. and worldwide helps ensure security
  • A secure pentagon-profile recess provides high torque capability

Higher torque with Raptor™ Security Head

When manufactured with the optional Raptor™ Head, the Penta-Nut™ can handle 20% more torque and provides more grip than any other nut on the market.

  • Radial gripping serrations flex downward with torque
  • Eliminates the need for a lockwasher
  • Larger diameter spreads the compressive load better

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.

PRICING

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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Choose the right fastener for your needs.

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