SPAX 5/16" x 4" Exterior Hex Head Structural Wood Lag Screws Powerlags Hex (250 EA) Bulk Pail Bit Included Heavy Duty Rust Resistant
- The trend setting low profile built-on washer head design offers a contemporary and sleek finished installation. Excellent draw down strength without the need for a separate washer delivers superior clamping ability and a easier installation
- Check out our Threads!! our patented thread technology allows the screw to be driven faster, is easier to install, and reduces splitting in wood. Let Spax take some of the hassle out of your next project
- High Corrosive resistant (HCR) coating makes these screws ideal for use in treated lumber and exterior applications
- Heat treated Grade 5 Durability. Subjecting the screw to heat treating gives greater strength and reduces breakage
- The Hex head drive allows for a strong bit engagement. Better bit engagement means quicker installation with less effort
Estimated shipping
Select a product to estimate shipping.Discover the Spax Advantage! this German engineered/American made Spax 5/16 x 4in. Hex Drive washer head HCR PowerLag offers a premium quality fastening solution to help ensure professional results in less time than inferior imported screws. Say good Bye to your fathers traditional lag. Spax PowerLags offer superior installation performance and durability over traditional lag screws and carriage bolts for structural wood construction. Made of carbon steel and coated for long term durability to ensure your project endures. Do it Once, do it right with Spax.
Thoroughly tested and engineered & made in the USA.
Available in 1/4", 5/16", 3/8", and 1/2" depending on your structural needs.
Available in contractor packs or buckets for larger jobs.
Product details






Specifications
| Main Specification | |
|---|---|
| Included Components | Building Materials & Ladders, Decking & Fencing, lag-screws |
| Manufacturer | Altenloh, Brink & Co |
| Unit Count | 250 Count |
| Item dimensions L x W x H | 4 x 0.31 x 0.31 inches |
| Exterior Finish | Copper |
| Metal Type | Carbon Steel |
| Head Style | Hex |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 0.31 inches |
| Brand | SPAX |
| Head Type | Hex Head |
| UPC | 712216020290 |
| Fastener Type | Wood Screws |
| Item Diameter | 0.31 Inches |
| Number of Pieces | 1 |
| Fastener Size | 4" |
| Thread Size | 5/16" |
| Material | Abs (Acrylonitrile Butadiene Styrene) |
| Colour | Black |
| Thread Type | Un |
| Drive System | External Hex |
| Global Trade Identification Number | 00712216020290 |
| Item Weight | 13.9 pounds |
| Technical Details | |
|---|---|
| Part Number | 3571820801000 |
| Model | 3571820801000 |
| Material Type | ABS (Acrylonitrile Butadiene Styrene) |
| Number Of Items | 250 |
| Thread Style | Right Hand |
| Thread Class | Fine |
| Set Screw Thread Type | Unc |
| Item details | |
|---|---|
| Item Type Name | lag-screws |
| Style | |
|---|---|
| Finish Types | Corrosion-resistant coating |
| Measurements | |
|---|---|
| Item Dimensions | 4 x 0.31 x 0.31 inches |
| Others | |
|---|---|
| Product Type | lag-screws |
| Grade Rating | grade_ 5 |
| Size Name | 5/16 x 4" |
| Screw Head Style | Hex |
| Screw Point Style | Self-tapping |
| Tags | |
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