Meet the Hillman 5/8 in. D x 7 in. L Heat Treated Zinc Steel Hex Head Cap Screw—a single, high-strength fastener designed to deliver dependable performance in demanding assemblies. The heat‑treated zinc finish combines corrosion resistance with enhanced hardness, so this screw stands up to outdoor, workshop, and heavy-use environments.
-
Brand & type: Hillman hex head cap screw for secure, easy drive with standard wrenches.
-
Size & fit: 5/8 inch nominal diameter and 7 inches long for deep engagement and strong holding power.
-
Material & finish: Hardened steel with a heat-treated zinc coating to resist rust and wear in real-world use.
-
Strength class: Grade 5 construction for superior tensile strength under load.
-
Thread & drive: Coarse thread for faster installation and robust mating with compatible nuts and tapped holes.
-
Packaging: Boxed, single piece per package for convenient job-site selection and reduced waste.
Why this screw stands out
-
Built for heavy-duty assemblies: The combination of 5/8" diameter and 7" length provides substantial engagement in wood, soft metals, or composite substrates, making it a versatile choice for decks, framing, brackets, and machinery mounts.
-
Long-lasting protection: The heat-treated zinc finish not only sharpens the screw’s edge and hardness but also delivers reliable corrosion resistance in environments where moisture or humidity is a factor.
-
Reliable strength: Grade 5 indicates higher tensile strength than standard fasteners, helping maintain tight joints under vibration or dynamic loads.
-
Efficient installation: The coarse thread design reduces driving effort and improves bite in wood and other softer materials, helping you complete projects faster.
Ideal use scenarios
- Decking and railing installations where deep thread engagement is beneficial
- Wood-to-metal connections in machinery mounts or structural brackets
- Furnishings and cabinetry that require a sturdy, long-fastening solution
- Outdoor projects exposed to moisture, where corrosion resistance extends service life
Practical tips for best results
- Pre-drill holes appropriate for the 5/8" diameter to prevent splitting in hard woods or dense substrates.
- Pair with compatible nuts and washers to distribute load and protect surfaces.
- Use thread locker sparingly if vibration is a concern, then snug the fastener to the recommended torque for your materials.
- Store in a dry place to preserve the boxed, single-piece packaging and prevent corrosion over time.
The Hillman 5/8 in. D x 7 in. L Heat Treated Zinc Steel Hex Head Cap Screw is designed for professionals and serious DIYers who demand dependable strength, precise fit, and long-lasting performance from a single, straightforward fastener. Add it to your toolkit for projects that require a robust, ready-to-use solution with proven durability.
