For builders and fabricators who demand durable, high-strength fasteners, the Hillman 1 in. D X 4 in. L Heat Treated Steel Hex Head Cap Screw 10 pk delivers dependable performance in demanding settings. Engineered from heat-treated Grade 8 steel, this screw pairs a large 1 inch hex head with a 4 inch shank for solid, secure assemblies in timber, steel, and mixed-material builds.
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Brand: Hillman
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Product type: Hex Head Cap Screw
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Finish: Heat Treated
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Material: Steel
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Grade: 8
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Head diameter: 1 in
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Length: 4 in
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Thread type: Coarse
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Package quantity: 10
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Packaging: Boxed
Why this matters: Heat-treated Grade 8 steel delivers greater hardness and higher yield strength than standard fasteners, translating to improved torque retention, reduced thread wear, and better long-term performance under heavy loads and vibration. The 1 inch hex head provides ample surface area for steady, controlled tightening, while the 4 inch length ensures a deep, secure grip in thick materials or through through-holes with a reliable lock.
Ideal use cases:
- Heavy-duty timber-to-metal connections, such as attaching steel brackets to thick wooden beams or assembling rugged deck frames.
- Machinery bases and mounting plates where high shear strength and repeatable torque stability are critical.
- Rugged outdoor or workshop projects that require a durable fastener capable of withstanding repetitive assembly and disassembly.
Practical tips:
- Pair with appropriately sized nuts and washers to distribute load and prevent pull-through in softer materials.
- Check hole fit and consider a thread locker for dynamic applications where vibrations may loosen fasteners over time.
- Store and organize the 10-pack in the included boxed packaging for quick access on future projects.
Choose Hillman hex head cap screws for consistently reliable performance in both woodworking and metalworking applications. This 10-pack provides a ready-to-use solution for high-strength fastening needs, backed by Hillman’s reputation for durable, purpose-built hardware.
