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Tapcon Large Diameter Zinc-Plated Hex Head Concrete Screw
Tapcon Large Diameter Zinc-Plated Hex Head Concrete Screws are purpose-built fasteners designed for applications where extra holding power in concrete, block, and masonry is required. The large diameter shank increases contact with the base material for greater pull-out resistance, while the hex head allows installers to drive the screw quickly and securely with a standard wrench or hex socket. A zinc-plated finish helps the screw resist corrosion during and after installation. Tapcon fasteners are proudly made in the United States, and each box is packaged with the specific quantity shown for the selected size, so contractors and DIYers alike can order exactly what the job requires.
Key Features
- Large Diameter Shank: The oversized diameter compared to standard concrete screws increases surface contact with the base material for greater holding and pull-out resistance.
- Hex Head Design: A hex head profile lets installers drive the screw quickly and securely using a standard wrench or hex socket driver, reducing installation time.
- Zinc-Plated Finish: The zinc-plated coating helps protect the fastener from corrosion, supporting long-term performance after installation.
- Built for Masonry Substrates: Designed to anchor directly into concrete, block, and masonry without the need for a separate anchor sleeve.
- Sold By the Box: Each box ships with the quantity specified for the selected size, making it simple to order the right amount for the project.
- American Made: Manufactured in the United States, supporting consistent quality control from production through packaging.
Technical Specifications
- Country of Origin: American Made
Typical Applications
- Anchoring Fixtures and Hardware to Concrete
- Masonry and Block Wall Fastening
- Commercial and Residential Construction Projects
- Renovation and Remodeling Applications
- Mounting Brackets, Rails, and Equipment to Concrete Surfaces
- Electrical and Mechanical Equipment Mounting to Masonry
Why Tapcon?
Tapcon is a trusted name in concrete fastening, known for screws engineered to deliver dependable holding power in demanding masonry applications. With a durable zinc-plated finish and American-made construction, Tapcon Large Diameter Hex Head Concrete Screws are built to perform reliably on professional job sites. Choose Tapcon for consistent, dependable fastening solutions for concrete and masonry work, backed by a brand contractors have trusted for years.
Specifications by Size
| Size | Part # | Pull-Out (lbs.)* | Shear (lbs.)* | Bit Size | Box Qty | Length ID Code | Max. Fixture Thickness | Min. Edge Distance | Min. Embedment | Min. Fixture Hole Ø (Hole Spotted) | Min. Fixture Hole Ø (In Place) | Min. Spacing | Thread Type | Driver Size | Wrench Size | UPC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8" x 1-3/4" (Box of 50) | LDT-3816 | 1336 | 2108 | 5/16" | 50 | A | 1/4" | 3" | 1-1/2" | 7/16" | 7/16" | 6" | Hi-Lo | 9/16" | 9/16" | 662520083330 |
| 3/8" x 2-1/2" (Box of 50) | LDT-3824 | 1336 | 2108 | 5/16" | 50 | C | 1" | 3" | 1-1/2" | 7/16" | 7/16" | 6" | Hi-Lo | 9/16" | 9/16" | 662520079838 |
| 3/8" x 3" (Box of 50) | LDT-3830 | 1336 | 2108 | 5/16" | 50 | D | 1-1/2" | 3" | 1-1/2" | 7/16" | 7/16" | 6" | Hi-Lo | 9/16" | 9/16" | 662520079869 |
| 3/8" x 4" (Box of 50) | LDT-3840 | 1336 | 2108 | 5/16" | 50 | F | 2-1/2" | 3" | 1-1/2" | 7/16" | 7/16" | 6" | Hi-Lo | 9/16" | 9/16" | 662520083361 |
| 3/8" x 5" (Box of 40) | LDT-3850 | 1336 | 2108 | 5/16" | 40 | H | 3-1/2" | 3" | 1-1/2" | 7/16" | 7/16" | 6" | Hi-Lo | 9/16" | 9/16" | 662520084863 |
| 1/2" x 3" (Box of 25) | LDT-1230 | 3580 | 2108 | 7/16" | 25 | D | 1" | 5" | 2" | 9/16" | 9/16" | 8" | Hi-Lo | 3/4" | 3/4" | 662520082487 |
| 1/2" x 4" (Box of 25) | LDT-1240 | 3580 | 2108 | 7/16" | 25 | F | 2" | 5" | 2" | 9/16" | 9/16" | 8" | Hi-Lo | 3/4" | 3/4" | 662520082517 |
| 1/2" x 5" (Box of 25) | LDT-1250 | 3580 | 2108 | 7/16" | 25 | H | 3" | 5" | 2" | 9/16" | 9/16" | 8" | Hi-Lo | 3/4" | 3/4" | 662520082548 |
| 1/2" x 6" (Box of 20) | LDT-1260 | 3580 | 2108 | 7/16" | 20 | J | 4" | 5" | 2" | 9/16" | 9/16" | 8" | Hi-Lo | 3/4" | 3/4" | 662520087765 |
| 5/8" x 3" (Box of 10) | LDT-5830 | 5276 | 8656 | 1/2" | 10 | D | 1/4" | 6" | 2-3/4" | 5/8" | 5/8" | 10" | Hi-Lo | 13/16" | 13/16" | 662520087857 |
| 5/8" x 4" (Box of 10) | LDT-5840 | 5276 | 8656 | 1/2" | 10 | F | 1-1/4" | 6" | 2-3/4" | 5/8" | 5/8" | 10" | Hi-Lo | 13/16" | 13/16" | 662520087888 |
| 5/8" x 5" (Box of 10) | LDT-5850 | 5276 | 8656 | 1/2" | 10 | H | 2-1/4" | 6" | 2-3/4" | 5/8" | 5/8" | 10" | Hi-Lo | 13/16" | 13/16" | 662520087918 |
| 5/8" x 6" (Box of 10) | LDT-5860 | 5276 | 8656 | 1/2" | 10 | J | 3-1/4" | 6" | 2-3/4" | 5/8" | 5/8" | 10" | Sawtooth™ | 13/16" | 13/16" | 662520087949 |
| 3/4" x 4-1/2" (Box of 10) | LDT-3444 | 6876 | 7140 | 5/8" | 10 | G | 1-1/4" | 7" | 3-1/4" | 3/4" | 3/4" | 12" | Sawtooth™ | 15/16" | 15/16" | 662520088328 |
| 3/4" x 5-1/2" (Box of 10) | LDT-3454 | 6876 | 7140 | 5/8" | 10 | I | 2-1/4" | 7" | 3-1/4" | 3/4" | 3/4" | 12" | Sawtooth™ | 15/16" | 15/16" | 662520088359 |
| 3/4" x 6-1/4" (Box of 10) | LDT-3462 | 6876 | 7140 | 5/8" | 10 | J | 3" | 7" | 3-1/4" | 3/4" | 3/4" | 12" | Sawtooth™ | 15/16" | 15/16" | 662520088380 |
* Pull-out and shear values are average ultimate loads in 2000 PSI concrete, offered as a guide only and not guaranteed. A 4:1 safety factor (25% of ultimate) is generally accepted as a safe working load.
Manufacturer Resources
Product Specs
- Product Brand:
- Tapcon
- Product Type:
- Hex Head Concrete Screw
- Country Of Origin:
- United States
- Department:
- Fasteners
- Product Group:
- Concrete Anchors
- Product Subgroup:
- Concrete Screws
- Product Material:
- Zinc Plated
- Location Rating:
- Dry