Heavy-duty structural screw engineered as a lag-screw alternative for timber framing and deck construction. Full thread with washer head and star drive delivers high withdrawal resistance.
Timber framing, deck posts, beams, structural connections.
| Size | 5/16 x 4 in |
| Head | washer head |
| Drive | star T30 |
| Qty | 400-count box |
| OEM sizes/colors available |
