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🛠️ Upgrade your build game with SPAX PowerLags — where strength meets speed!
The SPAX 1/4" x 3" PowerLag screws combine German engineering with American manufacturing to deliver premium, heat-treated Grade 5 carbon steel fasteners featuring patented thread technology and a corrosion-resistant coating. Designed for exterior wood projects, these screws offer superior clamping power, faster installation, and long-lasting durability, making them the go-to choice for professionals who demand flawless, efficient results.
| Asin | B018JQFBT6 |
| Best Sellers Rank | #14,397 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #26 in Lag Screws |
| Brand | SPAX |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (613) 4.8 out of 5 stars |
| Drive System | Torx |
| Exterior Finish | Anti-Corrosion Topcoat |
| Fastener Size | 1/4 inch x 3 inches |
| Fastener Type | Wood Screws |
| Finish Types | High Corrosion Resistant |
| Global Trade Identification Number | 00712216019171 |
| Grade Rating | grade_ 5 |
| Head Type | Round |
| Item Diameter | 0.25 inches |
| Item Dimensions | 3 x 0.25 x 0.25 inches |
| Item Weight | 1.7 pounds |
| Manufacturer | Altenloh, Brink & Co |
| Material Type | Carbon Steel |
| Maximum Shear Strength | greater than 38 ksi |
| Metal Type | High Carbon Steel |
| Model | 4581820700765 |
| Number Of Items | 50 |
| Number Of Pieces | 50 |
| Outside Diameter | 0.25 inches |
| Part Number | 4581820700765 |
| Screw Head Style | Washer Head |
| Screw Point Style | Type 17 Point |
| Set Name | SPAX PowerLags (50 Piece) |
| Size Name | 1/4 x 3" |
| Thread Coverage | Partially Threaded |
| Thread Size | 1/4" |
| Thread Style | Left Hand |
| Thread Type | Un |
| Unit Count | 50 Count |
| Upc | 712216019171 |
User
Love spax screws
Love spax screws, very durable, easy to install with a drill and saves time drilling for carriage bolts, washers and nuts. Same strength. I use these when putting A frames together for outdoor swings I build.
User
good product
Well made. Perfect for my purpose.
User
Seem to be well made. Haven't yet used them.
Thick. Looking forward to using this type head which seems to be reviewed well by different sites as well.
User
Tough and lowest price
Extra sturdy and the washer head keeps your screw from sinking through without pulling the boards together like deck screw tend to do. I’m building a barn with them and haven’t regretted using them. Fantastic product for a low price.
User
Best Structural Screw
Great structural screw for use in treated lumber and composite lumber. I used in building a large deck with composite lumber, has great pullout resistance and corrosion resistance and the washer head holds pieces together tight.
User
Building house and using spax fasteners.for certain parts and bracing
Excellent product prompt shipping
User
Great Product
I used several hundred of these screws on a small cattle barn and corral I built. They have plenty of holding power. Only one broke and I’m pretty sure that was my fault. Be sure to use with a good impact driver!!
User
Great product
Great product
Trustpilot
1 week ago
2 weeks ago