(800) 558-1082 Intl: (480) 503-3801
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Anti-theft nut

Protector Nut & Security Cap

The OIL & GAS ANTI-THEFT NUT quickly adds

much needed security to the petroleum industry. Engineered from scratch to create an all new solution.

oil and nut pulled apart
security cap

Security Cap - Tough Exterior

More than meets the eye. A threaded, 200 ft-lb torqued security cap is only the beginning of the security features. This first barrier must be removed with the proprietary tri-pin end of the included driver bit. The asymmetrical pin pattern acts as a disguised security feature.

Disguised security feature:

Pins are not symmetrical as they may appear.

tri pin bit
tri-pin nut protector nut

Protector Nut – Strong AND Unique

The strength of the Oil & Gas Anti-Theft Nut assembly is the Protector Nut. The steel hardness and shallow keyway geometry gives would-be thieves nothing to grab onto. The perfectly matched driver bit locks onto the tapered keyway fins allowing incredibly high torque.

Enigma Key Coding – 131 billion keyway variations. These twists and tapers of the keyway can only be replicated by the same machine that created the original key-code. Any counterfeit wrench can not engage sufficiently to apply the required breakout torque.

Oil & Gas Anti-Theft Nut

7 Levels of Security
  1. Security Cap torqued 200 ft-lb
  2. Asymmetrical tri-pin pattern on Security Cap
  3. Proprietary Protector Nut keyway profile can’t be matched
  4. Protector nut handles extreme torque up to 800 ft-lb
  5. Unique driver bit engages very shallow keyway profile fins leaving nothing for theives to grip onto
  6. Outer shroud spins freely frustrating thieves
  7. Hardened, heat-treated steel

Currently Available In:
1”8, 11/8-8, 11/4-8
4130 material
Rockwell hardness RC 50-55

ASTM A325 Type 1
Available with Brycote™
300 hr salt spray coating

Custom Made:
Can be produced to match any bolt size to meet customer needs. Can be coated to customer specifications to match operational environment.

Find the right fastener for you.

Contact Bryce Fastener

Or any question you may have.

No pressure, no commission, just lots of good advice.


Request a quote CAD on Demand

For International Sales - Contact:

Dienye Hart /
+234.80.333.98.654 / +44.782.609.4013 / +1.289.407.4801

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KEY-REX™, Keyed-Lok®, Penta-Plus™, Hex-Pin™, and Tam-6lobe™ are registered trademarks of Bryce Fastener Mfg.

Copyright Bryce Fastener Mfg., Inc., 2020. All Rights Reserved. Prices Subject to Change Without Notice.

*Zero Theft is not Guaranteed.

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

1230 N. Mondel Dr. • Gilbert, Arizona 85233 • Tel: 1-800-558-1082 (U.S.) • 480-503-3801 (International) • Fax: 1.800.258.1082 • 480-503-3834 (Intl)

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