Security Bolts

Tufnut Security Bolts

Tufbolt Security Bolts are carriage bolts without a square neck beneath the head. They are useful for metal-to-metal fastenings where the square neck of a regular carriage bolt won’t fit into a drilled hole.

On a sign installation, the Tufbolt does not damage the bond between the reflective sheeting and the substrate, extending the life of the sign by preventing "mushrooming" at the point of fastening.

One-Way Bolts are security bolts which can be held with a screwdriver to prevent turning during installation.

Carriage Bolts are recommended for use with Tufnut security hardware in all situations where the square neck is not a problem. The round head is difficult to grasp, while the square neck prevents the bolt from turning. We can supply them for you in all sizes if you cannot obtain them locally.

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"If these nuts and bolts are installed properly, you will find that sign theft will drop drastically. The only problem we have now is vandalism or theft of signs and post together."

John Bunton, Caddo Parish Commission

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Security Fasteners
Tufbolt Security Bolts
Tufbolt Security Bolts

Tufbolt Security Bolts are carriage bolts without a square neck beneath the head. On a sign installation, the Tufbolt anti theft bolt does not damage the bond between the reflective sheeting and the substrate, extending the life of the sign.

One-Way Security Bolts
One-Way Security Bolts

Similar to the Tufbolt security bolt, One-way bolts are also neckless carriage bolts. With their unique slotted head, the bolts can be held in place or driven with a flat-bladed screw driver but cannot be "unscrewed". A special removal tool is available to recognized customers upon request.

Carriage Bolts
Carriage Bolts

Carriage Bolts are low-cost security bolts that can't be turned once fastened because the square neck seats into metal or wood, preventing the bolt from turning. We offer sizes common for sign installation, and they're usually available locally.