All About Security Screws: The Best Types

All About Security Screws: The Best Types

The Best Security Screws: Tamper Resistant And Tamper Proof

Did you know that there are specialty fasteners such as bolts, nuts, and screws that are tamper-proof? Their main feature is their drive style, which is unconventional.

Whenever a certain assembly is vulnerable to disassembly or vandalism because it is easily accessible to the public, this is an area or a machine that warrants the use of tamper-proof fasteners.

Security screws can be either tamper-resistant or tamper-proof. Tampering with the screw becomes either difficult or simply impossible without access to a matching driver.

Such security screws find uses in mixed places. Picture gutters, car license plates, roof grills in penitentiaries and schools, as well as front grills in cars and boats. These specialty fasteners are also used in areas that process and prepare food. Security screws can also be found in bathroom stalls, especially toilet partitions, as well as similar public locations.

What Is This “Unconventional Drive Style”?

Unconventional Drive Styles are as varied as possible. Their task is very simple: to make it difficult enough, or even impossible, to install or remove a screw or bolt without the corresponding security driver bit.

One Way Screws

Some people call One Way Screws as Irreversible Screws, or, alternatively, One Direction Screws. This name comes from their drive style, where the screw head’s main element is a slotted drive with a particular goal in mind.

It is made this way to cause cam out as soon as someone turns the driver in the opposite direction. This is done at the drive manufacturing level: there are quadrants designed to raise gradually when accepting the driver bit as the operator turns the screw clockwise. If the operator turns it counterclockwise, it will be rejected.

One Way Drive allows for easy screw installation with a simple slotted bit. Screw removal, on the other hand, is virtually impossible without a removal tool specifically designed for this operation.

One Way Screws are found in all places where tampering after installation is a possible issue. They can be public spaces such as bathroom partitions and fixtures, car and truck license plate frames, and also home safes mounted to the floor or the wall.

In general, any Tamper Proof Screw is used to deter theft or vandalism, since removing the screw is complicated or simply impossible without owning a corresponding unconventional bit. Being particularly hard to remove, One Way Screws should be preferred for long-lasting uses.

Stainless Steel Spanner Screws

As their name implies, Tamper Proof Spanner Screws (or “Snake Eye” Security Screws) are installed with a spanner bit. The “Snake Eye” reference comes from the two-dot drive bit required.

Spanner security screws are another type of screw used in areas vulnerable to vandalism or simple theft, such as home gutters, car license plates, grills in public buildings such as penitentiaries, schools, and libraries, restroom stalls, and even in food processing zones.

These screws require a special spanner bit, which fits into a couple of drive holes in the screw. Because of that requires both to install and to remove them, spanner screws are very resistant to being tempered.

Stainless Steel Torx Screws

Torx is a trademark. Its pin security drive requires a special security bit, to turn the six lobes (or star drive) with a central pin. This is the main deterrent to tampering and theft. The pin adds extra tamper resistance because it stops common screwdrivers or conventional grabbing tools from tampering the original install.

Tri-Groove Security Nuts

These T Groove Nuts have a tapered diameter. This is what makes Trident Drive Nuts resistant to normal gripping tools. Cone Trident Drive Nuts are installed using a special socket called Tri-Groove. This socket grips indentations on the fastener and turns the nut along the thread, making them very resistant to tampering.