Honestly, the first time I had to install a street bench in a park project, I opened the crate and thought the same thing—where are the bolts? The answer depends entirely on where and how you buy your bench. Most commercial-grade street benches do not include the anchor bolts in the box, and here’s the real reason: the ground surface is never the same. One spot is poured concrete, another is brick pavers, a third is asphalt, and nobody wants to ship a one-size-fits-all bolt kit that ends up being useless. Instead, manufacturers give you a pre-drilled mounting base, often heavy cast iron or steel plates with 1/2" or 5/8" holes, and leave the hardware up to you or your installer to match the substrate.
So what actually holds the bench down? In concrete, you’ll typically use wedge anchors or sleeve anchors—those chunky expansion bolts that bite into the concrete when you torque them. For a standard 6-foot steel bench, I always reach for 1/2" x 4-1/2" galvanized wedge anchors, two per foot plate, and I drill the hole at least half an inch deeper than the anchor length with a hammer drill. If you’re mounting on asphalt, forget regular bolts; you need a ground anchor system with a deep helical rod or a concrete footing poured beneath the asphalt, otherwise the bench will lean after one hot summer. In pavers or brick, you might core-drill through and epoxy threaded rods into a concrete sub-base. The bolts themselves are never standard wood screws or plastic anchors—this is all structural-grade, corrosion-resistant steel because a public bench takes a beating from weather, vibration, and people.
A lot of people ask about the “bolts included” part because big-box store furniture comes with every nut and washer. Street furniture is a different world. When you order a bench from a site furnishing supplier, the spec sheet will usually say “mounting hardware not included” or offer a separate anchor bolt kit as an add-on at checkout. I’ve learned to treat that add-on as gold if it’s designed by the fabricator—those kits often come with matching stainless steel bolt caps and tamper-proof nuts to deter theft. Otherwise, your local hardware store run is inevitable. Just make sure you grab hot-dip galvanized or 316 stainless steel for coastal areas, and grab a torque wrench; you don’t want to snap a bolt inside a fresh concrete hole.
If you’re DIY-installing a lightweight aluminum bench for a front yard, the game changes slightly. Some residential models do include a basic anchor pack—maybe 3/8" expansion bolts and plastic sleeve plugs for concrete patios, but they still won’t work in soil. For soil installation, you need an in-ground mounting post system or a surface flange that gets pegged with long ground spikes or buried in a 24" deep concrete pour. And here’s a tip from someone who learned the hard way: even if bolts are included, always check the length. A 3" bolt in a 2" paver with no concrete underneath holds exactly nothing. You want a minimum embedment of 2-1/2" into structural concrete for a reliable anchor. So no, the bolts are rarely in the box, and honestly that’s the industry's way of making sure you use the right ones for your specific installation rather than a one-size-fails-all solution.