Self Drilling Concrete Screw Bolt

Using this Self Drilling Concrete Screw Bolt doesn’t need special skills, but you need the right drill bit. First, pick a drill bit that matches the bolt’s diameter—this is key for a tight fit. Don’t use a bigger bit, or the bolt won’t hold well in concrete.

Drill a hole in the concrete surface, then clean out all dust from the hole with a brush or air blower. Dust left inside will affect the hold. Next, align the bolt with the hole and twist it in with a drill or wrench. No need for anchors; it taps threads into the concrete as you twist. Go slow when twisting near the end to avoid stripping threads. It’s used to fasten things like brackets, shelves, or light fixtures to concrete walls. Self Drilling Concrete Screw Bolt works on solid concrete, brick, or block—just avoid loose or cracked surfaces.

We package this bolt to prevent thread damage and bending during shipping. For small orders—like 50 to 200 pieces—they’re sorted by size and put into thick plastic bags. Each bag has a simple label with size, quantity, and material info, so you can find what you need easily.

Bulk orders—1000 pieces or more—use sturdy cardboard boxes. We place paper dividers or foam inserts inside to keep the bolts from rubbing against each other. All outer boxes have a moisture-proof layer to avoid rust on metal bolts. If you need custom packaging for retail, just let us know when ordering. Self Drilling Concrete Screw Bolt follows these basic packaging rules, no extra frills, just to make sure it arrives in usable condition.

Can it work on all concrete types? What if the concrete is old or cracked?

A:It works on most solid concrete, brick, or block. But for old, loose, or heavily cracked concrete, it won’t hold well—there’s a risk of the bolt pulling out. Before use, check if the concrete surface is firm. If it’s slightly porous, it’s still okay, but avoid areas with big cracks. We suggest testing it first on your specific concrete. If it fails due to material mismatch, tell us your concrete condition, and we’ll recommend a more suitable fastener.