Tapcon 5/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 10
Tapcon 5/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 10!
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Zinc Large Diameter Concrete Screws
Large Diameter Concrete Screws
Concrete Screws
Tapcon 5/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 10

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Specifications
5/8" x 3" LDT Tapcon Screw, Zinc, Pkg 10
The 5/8 inch x 3 inch LDT Tapcon Zinc Concrete Screw Anchor is built for high-load anchoring into concrete, brick, and block. Its large diameter design delivers strong holding power without the need for expansion sleeves or secondary hardware. Each 10-pack is ideal for heavy structural connections where strength and reliability matter.
5/8" x 3" Zinc-Plated Large Diameter Concrete Screw Anchor
Finished with a protective zinc coating, this anchor provides corrosion resistance for interior and dry applications. The heavy-duty hex washer head ensures consistent torque transfer and solid clamping force during installation.
Key Features
- Zinc-Plated Finish: Adds corrosion resistance for interior environments.
- Large Diameter Design: Supports demanding structural loads.
- Hex Washer Head: Delivers strong torque control and secure seating.
- Direct Masonry Threading: Installs without sleeves or expansion anchors.
Common Applications
- Structural Steel Brackets: Anchor heavy supports to concrete.
- Industrial Equipment: Secure machinery bases to floors.
- Guardrail Systems: Mount safety rails to masonry surfaces.
- Heavy Wood Framing: Attach thick lumber to concrete walls.
- Commercial Installations: Reinforce high-load attachments.
Installation Tips
- Pre-Drill Accurately: Use the specified masonry bit size.
- Clear the Hole: Remove dust for maximum thread engagement.
- Drive with Proper Socket: Apply steady torque until firmly seated.
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Zinc Large Diameter Concrete Screws
Large Diameter Concrete Screws
Concrete Screws



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Tapcon 5/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 10
These worked great. Just be aware that they use a 1/2" drill and are the same size as the Tapcon nominal 1/2" concrete screws, so they won't save you if the hole is a little too big.