# SPAX 5/16 in. x 3 in. Black Powerlags XF Exterior 7/16 in. Hex Head Structural Wood Lag Screws (250-Pieces)

**Brand:** [SPAX](https://shop.coreranger.com/brands/SPAX)
**SKU:** XFH312P300B250
**Price:** $157.99 · in stock
**URL:** https://shop.coreranger.com/product/spax-5-16-in-x-3-in-black-powerlags-xf-exterior-7-16-in-hex-head-structural-wood-lag-screws-250-piec-341779950

## Specifications

| Spec | Value |
|---|---|
| Size | 5/16 in |
| Model # | XFH312P300B250 |
| Features | Self Tapping |
| Head Style | Hex Head |
| Internet # | 341779950 |
| Returnable | 90-Day |
| Drive Style | Hex |
| Store SKU # | 1015598623 |
| Screw Length | 3 in |
| Thread Style | Serrated Thread |
| Fastener Type | Wood Screw |
| Fastener Color | Black |
| Fastener Plating | Epoxy |
| Package Quantity | 250 |
| Fastener Material | Carbon Steel |
| Interior/Exterior | Exterior |
| Measurement System | Inches |
| Product Weight (lb.) | 10.46 lb |
| Manufacturer Warranty | For warrenty information call Customer Support 1-800-435-4654. |
| Fastener Base Material | Exterior Wood |

## Description

Achieve faster, stronger structural wood-to-wood connections with SPAX PowerLags XF Hex Head structural screws. Engineered for high-demand applications, these premium fasteners eliminate the need for pre-drilling thanks to SPAX's advanced 4 CUT Point. The razor-sharp tip delivers a quick, clean start, reduces splitting, and drives smoothly for more efficient installations in both dimensional lumber and heavy timbers. Feature a high-strength hex head that delivers a confident slip-free fit for maximum torque transfer and reduced cam-outs during installation. Paired with SPAX's optimized thread geometry, PowerLags XF drives up to 10% faster-and up to 14% faster on 5/16 in. diameters-helping professionals complete structural connections more efficiently with less effort. Choose the HCR exterior coating for long-lasting durability in pressure-treated lumber moisture-prone environments, and harsh outdoor conditions. It's ideal for decks, pergolas, gazebos, fencing, landscaping timbers, posts, beams, and other outdoor structural builds. - or -Select yellow zinc interior finish for clean, reliable performance in framing, beam and truss assembly, cabinetry, stair construction, remodel work, and general interior structural applications. Backed by third-party testing and IRC/IBC code approvals, PowerLags XF is built for demanding applications involving 2 x 2 lumber, 4 x 4 and 6 x 6 timbers, and engineered wood products (EWP). Proudly made in Bryan, Ohio with globally sourced materials.

• SPAX's razor- sharp tip delivers fast, clean starts
• Optimized thread geometry for faster 5/16 in. sizes
• HCR exterior coating for long lasting durability