Security Nuts

Types of Nuts

Hex: A nut that has six sides; sometimes called a hex nut.
Nylon Insert Lock: Has a nylon insert that prevents backing off; sometimes called a nylock.
Jam: Similar to a hex nut, but has a smaller height.
Nylon Insert Jam Lock: Similar to a nylock nut, but has a smaller height.
Cap: A nut fastener with a domed top at the end.
Flange: Includes a built-in washer like flange.
Square: A nut that has four sides.
Prevailing torque lock: A lock (non-reversible) that is used for applications that require high temperatures.

*Standard nuts are not considered secure because they can be installed and removed using standard and widely available hardware tools.

Types of Security Nuts

There are various different types of security nuts, each with a different set of features and uses. Below are descriptions of two popular security nuts:

Trident Nut: Provide tamper-resistant fastening for a wide range of products using screws, bolts, or concrete and masonry anchoring devices. Tridents nuts are commonly found in correctional institutions, hospitals, educational facilities, public buildings, and retail stores. They are used to secure a vast array of products, including scaffolding, electronic equipment, computer equipment, public furniture (e.g., benches), and much more. Security comes from the unique conical design with internal threading. Generally, this type of nut has three indented slots for installation and removal with a unique tool.
Trident Nut Specifications: one-piece unit manufactured from ZAMAK 5 zinc alloy; feature a tamper-resistant internally threaded fastening device with a conical design to inhibit unauthorized removal; three indented slots for installation and removal by proper tool. Now available in 316 stainless steel.
Break-Away Nut: Similar to trident nuts, they are used extensively in correctional facilities, universities, hospitals, public areas, and retail stores. This type of nut is defined by its break-away property: after tightening to a specific torque, the head breaks away and leaves a conical shaped tamper-resistant nut. Break-away nuts are often used for applications where removal of a fixture is not intended or where tampering protection is critical. In general, they are also manufactured from ZAMAK 5 zinc alloy. They are also manufactured from ZAMAK 5 zinc alloy and 304 stainless steel.

What’s the difference between a standard nut and a security nut?

Standard nuts offer less protection because they can be installed and removed by everyday drills, drives, screwdrivers, and other tools. Conversely, tamper-resistant and/or tamper-proof nuts offer extra security because they must be installed with special tools, unavailable for purchase at general hardware stores. Beyond that, these nuts can only be removed using the same set of unique tools. Requiring unique tools for installation and removal reduces the incidence of vandalism, tampering, and burglary.