How Do I Secure My Manhole Cover?

Security and tamper-resistant bolts immensely reduce the likelihood of anyone walking away with a cover or allowing unauthorized access to the components underneath.

Hex Bolts:
Bolt down manhole covers are the most common security option. Hex bolts are used to secure the manhole cover to the frame, requiring a socket wrench to access the manhole. Even though a socket wrench is a very popular tool, this will definitely deter any unauthorized access. If a regular hex bolt doesn’t get the job done, you might consider securing your cover with a penta bolt.

Penta Bolts:
The penta bolt is very similar to a generic hexagonal headed bolt, except the head has five sides instead of six. This requires a special five-headed socket to unscrew the bolt. Utility companies most commonly use this bolt. Various sizes of penta bolts have been introduced to the market, which increases the security level of these bolts because unauthorized personnel are unlikely to have the proper size socket. However, if the penta bolt still doesn’t serve enough security, it’s time to learn about tamper-resistant bolts.

Tamper-Resistant Bolts:
Similar to penta bolts, tamper-resistant bolts require a special socket or tool to open. This tool can resemble an Allen wrench. What sets these bolts apart from a generic hex bolt or penta bolt is that the head of the bolt is rounded, deterring tools like pliers and wrenches from losing it.

One thing to consider is that if these tamper-resistant bolts are purchased from a standard supplier, the tool may be more common than you think.

Certain security bolt manufacturers have the capability of making one-off bolt heads and specific tools that are only available to one individual. This would be the highest level of tamper-resistant bolts, similar to a key.

Padlocks:
Speaking of special keys, another method that prevents manhole covers from being tampered with is a simple padlock. While many padlocks become corroded and filled with debris over time, our custom-fabricated padlocks are recessed below grade to prevent tripping hazards, traffic contact, and natural elements from getting inside. These locks also allow individual keyed access.

Overall, each of these options is great for securing your manhole cover, yet the question remains: which tamper-resistant option suits your property best? To get started, Request A Quote today!