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The HILLMAN FASTENERS 230089 is a zinc-plated hex head lag bolt sized at 3/8 inch diameter by 3 inches in length, sold in a 50-count pack. Lag bolts of this type are heavy-duty wood fasteners designed to draw and hold structural members together under load. The hex head accepts a standard socket or wrench drive, allowing controlled torque during installation. The zinc plating provides basic corrosion resistance for interior and sheltered exterior applications. This fastener is commonly installed by carpenters, general contractors, HVAC technicians securing equipment supports, electricians mounting panel strut, and plumbers fastening pipe brackets to wood framing.
This lag bolt is suited for structural wood-to-wood connections and hardware mounting in residential and light commercial construction. Typical applications include securing ledger boards, mounting equipment pads, fastening joist hangers, and anchoring support brackets. The 3/8 inch shank diameter and 3 inch length make it appropriate for moderate-depth fastening into dimensional lumber and engineered wood members. Installers across multiple trades use this size when attaching equipment supports, strut channels, or pipe hangers to wood structure.
Designed as a standard 3/8 x 3 inch hex head lag bolt compatible with typical wood framing, dimensional lumber, and engineered wood applications where this fastener size is specified.
Lag bolts of this diameter should be installed by drilling a pilot hole sized to the shank and thread root to prevent wood splitting, per standard fastener practice. A socket wrench or impact driver with a hex socket is the appropriate drive tool. Do not overtorque, as this can strip the wood thread engagement or shear the fastank shank. Refer to the applicable building code and fastener load tables for structural applications where engineering values are required.
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