The Hillman 3/8 in. D x 1-3/4 in. L Heat Treated Steel Hex Head Cap Screw is built for serious applications where strength, reliability, and consistent performance matter. Crafted from steel and heat-treated for enhanced hardness, these Grade 8 hex cap screws handle demanding fastenings with confidence, even under vibration and heavy loads.
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Diameter: 3/8 in
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Length: 1-3/4 in
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Head style: Hex head cap screw with a standard head diameter of 3/8 in
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Material & finish: Steel with heat-treated strength for durable, high-torque performance
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Grade: 8, providing superior tensile strength for critical joints
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Thread type: Coarse thread for fast, easy engagement and strong hold in softer materials
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Packaging: Boxed, 100 screws per package
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Product type: Hex Head Cap Screw for heavy-duty fastening needs
Why this screw stands out: the heat-treating process increases hardness and wear resistance, so fastenings stay secure longer in equipment, structural frames, and high-cycle assemblies. Compared with standard carbon steel fasteners, these 8-grade screws deliver higher load-bearing capacity and improved fatigue resistance, reducing the risk of loosening under heavy use.
Ideal use cases include mounting heavy brackets, fabricating steel or wooden frameworks, securing machinery housings, building heavy-duty shelving, and other out-in-the-field projects where torque matters. The coarse threads help you bite into wood or softer metals with less pre-tapping, while the robust hex drive allows for efficient installation with common tools.
Practical tips for best results: use a compatible hex driver or socket to achieve full seating without stripping; pair with appropriate washers if the joint requires even load distribution; verify this 3/8 in diameter and 1-3/4 in length fit your application’s hole size and material thickness; store and inventory these boxed screws to streamline maintenance and reorders for ongoing projects.
With 100 pieces per package, this Hillman fastener set is ready for bulk projects and shop use, delivering consistent quality you can rely on from job to job. If you’re building, repairing, or reinforcing structures or equipment that demand dependable performance, these heat-treated Grade 8 hex head cap screws are designed to deliver.
