5/16 x 3-1/2 Hex Lag Scrw HDG
by Gap Power
SKU 05571
Original price
$27.74
-
Original price
$27.74
Original price
$27.74
$27.74
$27.74
-
$27.74
Current price
$27.74
In-Store Availability
Stock Status:
Limited Stock (1-2?)
Location:
Not Specified
In-Store Only — Visit us in Gap, PA to purchase
Overview
The 5/16 x 3-1/2 Hex Lag Screw HDG (05571) is designed for heavy-duty wood fastening applications including timber-to-timber connections and wood-to-masonry or concrete installations.
| Specification | Detail |
|---|---|
| MPN | 05571 |
| Brand | Midwest Fastener |
| Size | 5/16 in. x 3-1/2 in. |
| Head Type | Hexagonal |
| Finish | Hot-Dip Galvanized (HDG) |
| Package Weight | 3.91 lb |
| Category | Hardware Fasteners > Screws |
Technical Features
- Hexagonal head design: Enables installation and removal using a wrench or socket driver, allowing precise torque application for secure seating in structural connections.
- Hot-dip galvanized (HDG) finish: Provides a thick, metallurgically bonded zinc coating that resists corrosion in outdoor, exposed, and high-moisture environments.
- 5/16 in. diameter x 3-1/2 in. length: Delivers sufficient thread engagement depth for load-bearing fastening in dimensional lumber and engineered timber applications.
- Large-format lag screw construction: Engineered for greater holding strength than standard wood screws, suitable for structural and semi-structural connections.
Applications
- Fastening heavy timbers to one another in framing, decking, and structural assemblies.
- Securing wood members to masonry or concrete substrates with appropriate anchor inserts.
- Outdoor construction projects where corrosion resistance is required due to weather exposure.
- Deck ledger board attachment, pergola construction, and heavy fence post installations.

















































