






🔧 Screw smarter, build stronger—no equal in performance!
The Simpson Strong-Drive SDS25412MB is a 1/4" x 4-1/2" structural wood screw featuring a patented 4CUT tip for easy, predrill-free installation and minimal wood splitting. Its double-barrier coating offers corrosion resistance superior to hot-dip galvanization, making it suitable for interior, exterior, and pressure-treated wood applications. The 3/8" hex washer head is stamped for easy identification, and the 100-pack ensures you’re ready for any project.
| Material | Double-Barrier Coating |
| Drive System | External Hex |
| Head Style | Flanged Hex |
| Exterior Finish | 3/8 Inch |
| Thread Size | 2 3/4 |
| Point Style | Type A Point |
| Metal Type | Alloy Steel |
| Brand | SIMPSON |
| Colour | Silver/Metallic |
| Head Type | Hex |
| Item Weight | 2.45 kg |
| Thread Type | Serrated Threads |
| Thread Coverage | Partially Threaded |
| Fastener Type | Wood Screws |
| Grade Rating | Standard |
| Set Screw Thread Type | Acme (Type 17) |
| Thread Style | Serrated Threads |
| Thread Class | Coarse |
| Fastener Size | 4.5 inches |
| Size | 4.5 inches |
| Item Diameter | 0.25 Inches |
| Compatible groove diameter | 0.25 Inches |
| Number of Pieces | 100 |
| UPC | 707392143604 |
| Global Trade Identification Number | 00707392143604 |
| Manufacturer | Simpson Strong Tie |
| Item model number | ZD045015 |
| ASIN | B0084KQPVQ |
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