Meet the Hillman 3/8 in. diameter x 7 in. long Heat Treated Zinc Steel Hex Head Cap Screws — a dependable, high-strength fastener designed to tackle demanding wood-to-metal and metal-to-metal connections. Encased in a practical boxed 50-pack, these screws are ready to meet the needs of workshops, job sites, and DIY projects alike.
Key features
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Diameter and length: 3/8 in. head diameter, 7 in. overall length for robust, deep-thread engagement.
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Finish and material: Heat-treated zinc coating on steel provides enhanced hardness and corrosion resistance where it matters most.
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Thread type: Coarse threads deliver quicker driving and strong bite in wood or pre-drilled holes with backing material.
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Strength class: Grade 5 steel combines solid tensile strength with reliable performance in a variety of fastening applications.
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Packaging: Boxed, 50-piece supply for easy storage, fast restocking, and on-demand use.
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Drive system: Hex head design accepts standard wrenches or sockets for straightforward installation.
Ideal uses and practical applications
- Furniture assembly, cabinetry mounting, and shelving brackets where a longer, tough fastener is required.
- Wood-to-metal connections in framing, equipment mounting, and structural hardware projects.
- DIY repairs and home-improvement tasks that demand durable fasteners with reliable torque.
- Projects that benefit from a balance of strength, corrosion resistance, and cost-effectiveness compared with pricier alternatives.
Why choose these Hillman hex screws
These screws stand out by combining heat-treated zinc protection with Grade 5 steel, delivering a resilient option that resists wear and maintains clamping force over time. The coarse thread enhances grip and reduces drive time, making them especially forgiving in wood and softer substrates. For projects where you don’t need stainless steel but still want solid corrosion resistance and dependable long-term performance, this Hillman screw provides excellent value without compromising strength.
Installation tips and best practices
- Pair with matching nuts or tapped holes to ensure proper thread engagement and secure clamping.
- Pre-drill as needed to prevent wood splitting and to optimize screw alignment and drive quality.
- Use the hex head with a standard wrench or socket for a precise, controlled drive and to avoid cam-out on tough materials.
Specifications at a glance
- 3/8 in.
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Length: 7 in.
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Material: Steel
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Finish: Heat Treated Zinc
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Grade: 5
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Thread type: Coarse
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Product type: Hex Head Cap Screw
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Quantity: 50 per boxed package
Whether you’re outfitting a workshop, completing a furniture project, or performing routine repairs, these Hillman hex head cap screws offer a reliable blend of strength, durability, and value. They’re the practical choice for professionals and DIY enthusiasts who need solid fastening performance without overpaying.
