Hex Head Carbon Steel Lag Screws, 5/16 in. x 3-1/2 in., 100-Pack

SKU:
WBB3148869
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$69.94
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Product Specifications:
Country of Origin: China
Material: Steel
Product Depth: 6"
Product Height: 3.8"
Product Type: Hex
Product Width: 8.4"
Quantity Included: 1
Shipping Weight: 6.4 lbs
Manufacturer Part Number: LAG516312
Length: 3-1/2 in
Head: Hex
Size: 5/16
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Free Shipping on Qualifying Orders Over $99

Product Specifications:
Country of Origin: China
Material: Steel
Product Depth: 6"
Product Height: 3.8"
Product Type: Hex
Product Width: 8.4"
Quantity Included: 1
Shipping Weight: 6.4 lbs
Manufacturer Part Number: LAG516312
Length: 3-1/2 in
Head: Hex
Size: 5/16

These hex head lag screws are heavy-duty fasteners for installers and maintenance teams connecting heavy lumber or other materials in demanding applications. They provide a larger fastening option when standard wood screws are too short or too small.

The 100-pack includes 5/16 in. x 3-1/2 in. lag screws made from low-carbon steel. They can be used with lag shields for masonry applications involving concrete, brick, or mortar. A pilot hole may be pre-drilled in some applications to help prevent splitting or snapping.


Key Features:

  • Hex head design: Provides a defined head style for driving lag screws during installation.
  • Low-carbon steel construction: Delivers steel fasteners for heavy-duty lumber connections.
  • 5/16 in. x 3-1/2 in. size: Offers a larger option where standard wood screws are too short or too small.
  • 100-piece pack: Supplies multiple screws for project and maintenance needs.
  • Lag shield compatibility: Supports use in concrete, brick, and mortar applications when paired with lag shields.

Choose these 5/16 in. x 3-1/2 in. hex head lag screws for heavy lumber fastening and compatible masonry installations using lag shields.

Country of Origin: China
Material: Steel
Product Depth: 6"
Product Height: 3.8"
Product Type: Hex
Product Width: 8.4"
Quantity Included: 1
Shipping Weight: 6.4 lbs
Manufacturer Part Number: LAG516312
Length: 3-1/2 in
Head: Hex
Size: 5/16
Unit of Measurement: Inch (Imperial)
Brand: L.H.Dottie
Description: Hex Head Lag Screw
Finish: Zinc
Manufacturers Part Number: LAG5161
Package Quantity: 100
Width: 6.00 in
Height: 3.80 in
Depth: 8.40 in