US security screws manufacturer 100% MADE IN THE USA

Call us: 480-503-3801

Proprietary Geometry. Controlled Drivers.

penta-nut tamper-resistant security
Bryce Exclusive


TAMPERPROOF($100 Min. Order)

A Nut That Acts Like a Lock

Penta-Nut™ is the largest diameter security nut available, and with the Raptor claw option, needs no washer. This high-security 316 stainless steel nut turns 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™ claw feature

When manufactured with the optional Raptor™ claw gripping serrations, the Penta-Nut can handle 20% more torque and provides more grip than any other security bolt and screw on the market.

  • Radial “claws” allow the center head to flex downward with torque
  • Eliminates need for lockwasher
  • Larger than standard screw head spreads the compressive load better

Stops Theft.

The applications are unlimited

  • Retail electronics
  • University electronics
  • Manufacturing
  • Public utilities
  • Prisons, jails, security facilities
  • Bank credit card, ATM
  • Gaming industry
  • Solar panels
  • House arrest electronics
  • Nuclear plants
  • Military
  • Museums
  • And many more

Get a FREE Penta-Nut® Quote

Each customer has different needs. Let us help you get protected.

Click for more info about Penta-Nut® Tamper-Proof Nut, or for all Bryce products, visit our products page.

1230 N. Mondel Dr. Gilbert, Arizona 85233 Tel: 480-503-3801 Fax: 480-503-3834 Email: Facebook

Bryce Fastener is the world leader in high security locking bolts and fasteners, security screws, tamper proof and tamper-resistant screws.

KEY-REX™, Keyed-Lok®, Penta-Plus™, Hex-Pin™, and Tam-6lobe™ are registered trademarks of Bryce Fastener Mfg.
Copyright Bryce Fastener Mfg., Inc., 2018. All Rights Reserved. Prices Subject to Change Without Notice. Zero Theft is not Guaranteed.