Posts & Sign Hardware

Traffic Sign Post And Hardware

When you need to erect a safety or management signpost on your property or you, as a contractor, are hired to help erect one on a construction site, along a street, or on a highway, you have to make use of the most appropriate mounting hardware. Why? Well, because multiple sign hardware options are available for different use cases and choosing the proper mounting hardware assures you of more durability.

Keep on reading as we inform you of the different types of street sign mounts available, what they are used for, and the right complementary hardware components to use with them.

Street Sign Mounts And Brackets

For your street signs, the type of mounts you use depends on the size and type of the signpost. These mounts don’t just keep the signpost together as a unified system, but sometimes, even give them extra protection or safety features in case of an accident. In many cases, legislation from the Federal Highway Administration (FWHA) guides the features of signposts you may use when erecting them on the highway.

The different mounting hardware components used for street signs include:

  • Posts
  • Surface mount bases
  • Brackets
  • Bolts and nuts


Posts are the sign supports or “backbone” of the entire signage system on which the signs that carry your message are mounted. The type of post you use is determined by your need for durability and the most common types of these include:

  • U-Channel Posts: These are the most common types of posts used to support low-weight loads as they are inexpensive, durable, and easy to install. These posts are used with traffic signs, for instance.
  • Round Posts: Steel tubes that are also inexpensive options and allow you to mount heavy-weight signs either through them or clamped to one side.
  • Square Posts: Square-shaped steel tubes that give you more durability and mounting options, making them cost more than round posts. You may mount your signs to four different sides and have the option of inserting another square tube sleeve inside to make it stronger.
  • I-Beam Posts: These additionally implement a breakaway system used with large heavy-weight signs for two reasons. When an accident occurs, the breakaway system limits the damage from the impact and also makes it easy to install another signpost onto it. These I-Beam posts utilize breakaway couplers that bend or break to achieve their detachable system.

Surface Mount Bases

Surface mount bases are the foundational components used to fasten the posts to the ground. These come in two forms; flat mount bases which are the basic forms of mount bases and extruded mount bases which are thicker mount bases that give the signage more support. Extruded mount bases are the preferred options in areas with adverse weather conditions.

Now, the thickness of the mount base depends on the size or weight of the signage system, with this ranging from 0.08″ up to 0.125″.


Brackets are the components you use to mount or attach your sign to the post and these have different use cases. As mentioned before, the type of brackets you utilize is mainly determined by the type of post you have installed. Some of the more common types of sign brackets include:

  • Center brackets: Used to centrally attach signs through posts.
  • Side mount brackets: Used to clamp signs to the side of posts, with heavier signs requiring heavy-duty side mount brackets.
  • Top mount brackets: These come as post caps with a mounting slot on top of them and are typically used to display street names.
  • Post-mount wing brackets: Used to attach flat signs to the side of posts.
  • U brackets: Attach only the corners of solid boards to the post.
  • Adjustable brackets: Include adjustable band brackets for back-to-back posts, adjustable strap brackets for varying post widths, and adjustable chevron brackets that allow you to change your signs’ angle of display.

Bolts and Nuts

Bolts and nuts are used to firmly fasten and keep other signage hardware components together. The type of signage system you use determines the type of fastener you may utilize. You may go the extra step of opting for theft-resistant bolts and nuts which are harder to take off and typically used with aluminum signs.

What Screw Is Used On A Street Sign?

The most common screw and bolt mix used within street signage systems is the 2.5″ x 5/16″ bolt and 5/16″ nut set. These components are typically quoted with zinc and the set is widely adopted because of its cost-efficiency, regardless of whether you want to erect traffic signs, parking signs, or property signs that make use of U-Channel posts, round posts, or square posts.

Getting Your High-Quality Street Sign Hardware

Remember that the quality of your street sign components determines the durability of your signage system. The additional importance of this signage system to the safety of road and property users, as well as the Federal regulations guiding their use, means your need for a reliable vendor becomes apparent. This is where Capitol Barricade steps in.

Capitol Barricade offers you equipment and services that ensure your street sign products installations fit quality requirements, regardless of their use case. You may Check out our high-quality posts and sign mounting hardware, which include square post sleeves for more durability and full-set installation hardware so you never have to worry about missing a component.

If you need any sign posts, sign hardware, and accessories, contact us today to help you find the best mounting hardware tools for your requirements.

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