Power Pro 25 Pc Construction Lag Screws (5/16" x 3-1/2") | Star Drive Structural Wood Screws | Type 17 Cut Point Coarse Thread Exterior Screws for Decks Stairs Playsets Treated Lumber
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- FAST HEAVY-DUTY WOOD PENETRATION PERFORMANCE: Type 17 cut point and aggressive coarse threads deliver fast, efficient starts in wood and treated lumber, helping reduce splitting, drive effort, and installation time.
- REINFORCED STRUCTURAL DESIGN: Reinforced neck and aggressive thread geometry provide superior strength and holding power for wood-to-wood connections where durability, load capacity, and long-term strength are critical.
- STAR DRIVE + LOW PROFILE HEAD DESIGN: Star drive helps reduce camout and slippage for improved torque transfer and controlled installation, while the low profile head supports smooth, efficient driving.
- ENGINEERED FOR EXTERIOR STRUCTURAL APPLICATIONS: Built for decks, stairs, playsets, and structural builds. The 5/16" x 3-1/2" size provides reliable penetration depth and strong holding power in exterior conditions.
- PROFESSIONAL-GRADE PERFORMANCE : Power Pro fasteners are engineered for strength, durability, and corrosion resistance, delivering reliable performance from installation through long-term use in interior and exterior applications.
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Select a product to estimate shipping.Power Pro construction lag screws are engineered for high-strength fastening in structural and outdoor wood applications. Featuring a Type 17 cut point and aggressive coarse thread design, these screws deliver fast penetration into wood and treated lumber while reducing splitting and installation effort. Built with a reinforced neck for enhanced durability, these lag screws are designed to replace traditional lag screws, providing strong and reliable wood-to-wood connections in structural builds. Ideal for decks, stairs, playsets, and general outdoor construction, they deliver dependable performance in load-bearing applications. The star drive system minimizes camout and slippage while delivering improved torque transfer for smoother, more controlled installation. This allows for efficient driving and consistent fastening performance across demanding jobsite conditions. Each screw features a bronze ceramic coating that exceeds 1,000-hour salt spray resistance under ASTM standards, providing long-lasting corrosion protection in exterior environments and treated lumber applications. Engineered in size 5/16" x 3-1/2", these screws provide reliable penetration depth and holding power. Each package includes 25 screws in a durable box designed for convenient storage and jobsite use.
This products has features that are both impressive and unique. Topping the list is the new "Star Drive" technology which virtually eliminates camout for a smooth, effortless drive every time. Chances for splitting wood are greatly reduced by the patented cross-cut threads and the wood biting cut point. These two features combine to prevent wood splitting by grinding wood and removing fibers from the hole.
Hillman Solutions is a leading North American provider of hardware products, including home improvement products, protective and job site gear solutions including gloves and storage, and robotic technologies encompassing key duplication and accessories, engraving and knife sharpening. Hillman designs innovative products and merchandising solutions for complex categories. Founded in 1964 in Cincinnati, Ohio, Hillman believes that the building never stops.
| Main Specification | |
|---|---|
| Manufacturer | The Hillman Group |
| Unit Count | 25 Count |
| Item dimensions L x W x H | 4.6 x 3.6 x 2.5 inches |
| Exterior Finish | Epoxy |
| Metal Type | Carbon Steel |
| Head Style | Truss |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 0.31 inches |
| Brand | Power Pro |
| Head Type | Truss |
| UPC | 008236695052 |
| Fastener Type | Lag Screws |
| Item Diameter | 0.31 Inches |
| Number of Pieces | 1 |
| Fastener Size | 5/16" |
| Thread Size | 5/16"-18 |
| Material | Carbon Steel |
| Colour | Bronze |
| Thread Type | Unc |
| Drive System | Star Drive |
| Global Trade Identification Number | 00008236695052 |
| Item Weight | 1.3 Pounds |
| Product information | |
| Number of Packs | 1 |
| Set Name | 25-Piece Set |
| Technical Details | |
| Part Number | 47870 |
| Model | 47870 |
| Material Type | Carbon Steel |
| Number Of Items | 25 |
| Thread Style | Left Hand |
| Thread Class | 1B or 2B |
| Compatible groove diameter | 0.31 Inches |
| Set Screw Thread Type | Unified National Coarse (Unc) |
| Item details | |
| Item Type Name | Rust Protection for Outdoor Wood Projects |
| Style | |
| Finish Types | bronze ceramic coated |
| Measurements | |
| Item Dimensions | 4.6 x 3.6 x 2.5 inches |
| Others | |
| Product Type | Rust Protection for Outdoor Wood Projects |
| Grade Rating | Premium |
| Size Name | 1lb Box |
| Screw Head Style | Truss |
| Screw Point Style | Type 17 Point |