Midwest Fasteners Grade 2 Zinc Plated Steel Hex Head Lag Screw

Midwest Fasteners Grade 2 Zinc Plated Steel Hex Head Lag Screw

Midwest Fasteners offers this Grade 2 / ASTM A307 hex head lag screw across a full range of diameters and lengths built for heavy-duty wood fastening. The lineup spans diameters from 1/4" up to 1/2" and lengths from 1" up to 10", including sizes such as 1/4" x 1", 1/4" x 3-1/2", 5/16" x 5", 3/8" x 4", 1/2" x 6", and 1/2" x 10". Every size is built from Grade 2 / ASTM A307 steel with a zinc plated finish for corrosion resistance and features the same hex head for high-torque driving with a wrench or socket. Lag screws like these are the go-to choice for heavy-duty wood-to-wood and wood-to-masonry connections where standard wood screws fall short, giving contractors and builders the large-diameter, deep-penetrating holding power needed for structural work. Each size is sold individually (Each).

Key Features

• Size Range: Diameters from 1/4" to 1/2" and lengths from 1" to 10", covering everything from thin stock to thick, deep wood connections.
• Material & Finish: Steel construction with a zinc plated coating that resists surface corrosion in general construction environments.
• Head Type: Hex head design for driving with a wrench or socket, delivering higher torque than slotted or Phillips drive styles.
• Grade: Grade 2 / ASTM A307 steel, a standard structural fastener grade used across every size in this family.
• Consistency Across Sizes: Every diameter and length option shares the same grade, finish, and head style, so performance is predictable regardless of which size you select.
• Package: Each (sold individually), with size selected at time of purchase.

Technical Specifications

• Product Type: Lag Screw
• Product Finish: Zinc Plated
• Standards: ASTM A307
• Country of Origin: China
• Product Material: Steel
• Available Diameters: 1/4", 5/16", 3/8", 1/2"
• Available Lengths: 1" through 10" depending on diameter selected

Typical Applications

• Attaching deck ledger boards to rim joists
• Heavy timber and post framing connections
• Fastening beams, posts, and structural wood members
• General wood-to-wood and wood-to-masonry construction where high clamping force is required
• Jobsite and maintenance repairs needing a large-diameter, high-torque wood fastener

Why Midwest Fasteners?

Midwest Fasteners builds this entire lag screw lineup to ASTM A307 and Grade 2 standards, giving contractors and fabricators a consistent, dependable fastener across every diameter and length in the range. The zinc plated steel construction provides reliable corrosion resistance on every size, and the hex head design ensures each screw performs the same way every time it's driven, whether you need a short 1/4" screw for light-duty work or a long 1/2" x 10" screw for heavy structural connections.