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🛠️ Nail your next project with screws that work as hard as you do!
Bobibbi’s 3/16 x 3-1/4" Flat Head Concrete Screw Anchors deliver professional-grade fastening power for masonry, block, and brick. Featuring a diamond tail for rapid drilling and a Blue Ruspert corrosion-resistant finish, these 100 carbon steel screws combine durability with efficiency. Perfect for home, workplace, or outdoor projects, they come in a convenient bulk pack and are backed by a lifetime warranty—making them the go-to choice for managers who demand reliability and speed.




| ASIN | B0C7MG98QP |
| Best Sellers Rank | #13,031 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Concrete Screws |
| Brand | Bobibbi |
| Color | Blue |
| Compatible Groove Diameter | 0.48 centimeters |
| Customer Reviews | 4.6 4.6 out of 5 stars (347) |
| Drive System | Phillips |
| Exterior Finish | Alloy Steel |
| Fastener Size | 3/16 x 3-1/4" |
| Fastener Type | Self-Drilling Screws |
| Finish Types | Powder Coated |
| Head Type | Flat |
| Item Diameter | 0.19 inches |
| Item Dimensions | 5.71 x 4.13 x 2.28 inches |
| Manufacturer | Bobibbi |
| Material Type | Carbon Steel |
| Metal Type | Carbon Steel |
| Number Of Items | 100 |
| Number of Pieces | 100 |
| Outside Diameter | 0.19 inches |
| Part Number | 3/16 x 3-1/4" Flat |
| Screw Head Style | Flat |
| Screw Point Style | Diamond Point |
| Set Name | Concrete Screw Set (100 Pieces, 3/16 x 3-1/4") |
| Size Name | 3/16 x 3-1/4" |
| Thread Class | 3A |
| Thread Coverage | Partially Threaded |
| Thread Size | 3/16 |
| Thread Style | Right Hand |
| Thread Type | Unc |
| Unit Count | 1 Count |
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