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ACME Thread (Trapezoidal thread)

Acme Thread Security Bolts

Choose Your Security Level

Low Security and High Security Drives are Available in Acme Threaded Fasteners

Our machine shop currently carries Thread Rolling Dies to make General Purpose Acme security bolts, with threads up to 2” long. Acme security bolts have diameters limited to 5/16, 3/8, and 1/2. These are for security applications needing a coarser thread to facilitate repeated opening and closing. They require a special Acme tapped hole to go into as well. They are usually made from hardened alloy steel (for repeated uses) and coated black with BryKote™.

Tam 6-Lobe™ and Hex-Pin are Low security Drives options. Removal tools and bits are available to anyone. We only recommend using these drives for low value applications (value $100).

Key-Rex®, Penta-Plus™, and STYKFIT® 7 are Bryce Fastener’s patented high security drives. Removal tools and driver bits are made custom, exclusive-to-you or controlled by Bryce Fastener. We recommend these drives for high value applications. Gas pump enclosures and military control boxes are some recent high value applications that required a high security drive Acme thread.

Drive Types - Acme Thread Security Bolts

Head Styles

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.
TORX® is a registered trademark of Acument Intellectual Properties, LLC
Copyright Bryce Fastener Mfg., Inc., 2018. All Rights Reserved. Prices Subject to Change Without Notice. Zero Theft is not Guaranteed.