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🔩 Lock it down with power and precision — your concrete’s new best friend!
Napredak’s 3/8 x 3-1/2 inch hammer drive concrete anchors are engineered from carbon steel with a center-pin expansion mechanism, providing reliable, heavy-duty fastening for concrete and cement surfaces. This 20-pack set is perfect for professionals and DIYers seeking durable, precision-fit anchors for industrial, maintenance, or household projects.












| ASIN | B0D7M3XG97 |
| Best Sellers Rank | #250,009 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #48 in Drive Anchors |
| Brand | Napredak |
| Color | Gold |
| Compatible Groove Diameter | 9.53 millimeters |
| Customer Reviews | 4.2 4.2 out of 5 stars (10) |
| Fastener Type | Hammer-In |
| Item Diameter | 9.53 millimeters |
| Item Dimensions | 5.7 x 1.73 x 5.51 inches |
| Item Highlight | Carbon steel masonry anchors with center drive-pin expansion for concrete and cement fastening projects |
| Item Shape | Cylindrical |
| Manufacturer | Napredak |
| Material Type | Carbon Steel |
| Number Of Items | 20 |
| Number of Pieces | 20 |
| Outside Diameter | 9.53 millimeters |
| Part Number | 3889 |
| Screw Head Style | Round |
| Set Name | 20-Piece Set |
| Size Name | 3/8"x3-1/2" |
| Thread Size | 3/8" |
| Unit Count | 20 Count |
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