Power Pro Construction Lag Screws, 5/16in x 3in, 30 Pack, Bronze
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- FAST WOOD PENETRATION: Engineered with a Type 17 cut point and aggressive coarse thread, these lag screws drive quickly into wood and treated lumber while helping reduce splitting, installation effort, and fastening delays.
- REINFORCED STRUCTURAL DESIGN: Built with a reinforced neck and aggressive thread geometry, these screws deliver dependable holding power for wood-to-wood connections where durability, load capacity, and long-term strength matter.
- STAR DRIVE + LOW PROFILE HEAD: Star drive minimizes camout and slippage while improving torque control for smoother installation. The low profile head supports a cleaner finish in structural and outdoor wood projects.
- EXTERIOR STRUCTURAL USE: Designed for decks, stairs, playsets, and general structural builds. Size 5/16 inch x 3 inch supports reliable penetration depth and strong holding power in treated lumber. Includes 30 screws in a durable 1 lb box.
- 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.
- No pre-drilling
- Star drive helps eliminate campout
- Ideal for decks, stairs, play sets and many other outdoor projects
Estimated shipping
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 added 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 consistent fastening performance across demanding jobsite conditions and repetitive applications. 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", these screws offer reliable penetration depth and holding power. Each package includes 30 screws in a durable 1 lb box designed for convenient storage and easy access on the jobsite.
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.
Power Pro Construction Lag Screws
Construction lag screws are perfect for your next outdoor project. Common applications include decks, stairs, and play sets. Parts are safe for use with treated lumber.
The Power Pro Advantage
Engineered for the outdoors, these products have 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. Use with treated lumber.
Safe to use in place of standard lag screws.
No pre-drilling required
Exterior coating provides rust and corrosion resistance
Faster, one-step installation
Recommended for treated lumber
Bronze color compliments most wood finishes
Use for decking and all exterior wood projects
Product Features
Star Drive Truss Head
Eliminates cam-out for a smooth, effortless drive every time.
Best-In-Class Corrosion Reistance
Bronze ceramic coat exceeds 1,000 hour salt spray test under ASTM B119.
Patented Cross Cut Threads
Common applications include decks, stairs, playsets, and many other outdoor wood project.
Self-Drilling Cut Point
Reinforced neck, aggressive thread design, and type 17 self-drilling cut point.
Other Power Pro Exterior Screws
Stainless Steel Exterior Screw
For decking and exterior wood projects.
Stainless Steel for ultimate corrosion protection
Recommended for use with treated lumber, cedar, redwood, and within 1,000 feet of coastal water
8x1-1/4" - 10x3-1/2"
Exterior Wood Screw
Bronze coating
Recommended for use with treated lumber
8x1-1/4" - 10x6"
Exterior Trim Screw
For composite decking wood decking exterior trim.
8x1-5/8" - 9x4"
Product details
| Main Specification | |
|---|---|
| Manufacturer | The Hillman Group |
| Unit Count | 30 Count |
| Item dimensions L x W x H | 4.5 x 3.2 x 1.9 inches |
| Exterior Finish | Epoxy |
| Metal Type | Carbon Steel |
| Head Style | Truss |
| Thread Coverage | Partially Threaded |
| Outside Diameter | 0.31 inches |
| Brand | Power Pro |
| Head Type | Truss |
| UPC | 008236695038 |
| Fastener Type | Lag Screws |
| Item Diameter | 0.31 Inches |
| Number of Pieces | 30 |
| Fastener Size | 5/16" |
| Thread Size | 5/16"-18 |
| Material | Carbon Steel |
| Colour | Bronze |
| Thread Type | Cross-cut |
| Drive System | Star Drive |
| Global Trade Identification Number | 00008236695038 |
| Item Weight | 1.3 Pounds |
| Product information | |
| Number of Packs | 1 |
| Set Name | 30-Piece Set |
| Technical Details | |
| Part Number | 47869 |
| Model | 47869 |
| Material Type | Carbon Steel |
| Number Of Items | 30 |
| Thread Style | Right Hand |
| Thread Class | Unified National Coarse |
| 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 | 4.5 x 3.2 x 1.9 inches |
| Others | |
| Item Highlight | Epoxy finish or star drive with type 17 cut point for outdoor wood projects or helps reduce splitting in decks and stairs |
| Size Name | 1 lb Box or 30 pcs |
| Product Type | Rust Protection for Outdoor Wood Projects |
| Screw Head Style | Truss |
| Screw Point Style | Type 17 Point |