Face outdoor joinery with confidence using the HILLMAN 5/16 in x 1 in Hot Dipped Galvanized Steel Carriage Bolt, Supplied in a convenient 100-pack. Built from sturdy steel and finished with hot dipped galvanization, these carriage bolts are designed to resist rust and wear in decks, fences, sheds, and other timber projects exposed to the elements.
Why this bolt stands out
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Corrosion resistance you can count on: hot dipped galvanized coating provides durable protection against moisture, reducing staining and unsightly corrosion over time.
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Solid timber performance: 5/16 in diameter paired with a 1 in length delivers a reliable, heavy-duty connection for common softwoods and structural lumber.
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Coarse threading for strong bite: optimized for wood-to-wood joints, delivering quick seating and a secure hold with fewer passes.
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Ready for volume projects: 100-pack in a boxed format keeps your hardware stash stocked for larger builds or ongoing maintenance.
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Trusted brand and standard sizing: Hillman’s proven hardware construction ensures compatibility with standard nuts and washers and predictable performance across tasks.
Key specifications at a glance
- Diameter: 5/16 in
- Length: 1 in
- Material: Steel
- Finish: Hot Dipped Galvanized
- Thread type: Coarse
- Grade: 2
- Head type: Carriage bolt
- Package quantity: 100
- Packaging: Boxed
- Unit of measurement: SAE
Ideal uses and scenarios
Perfect for timber-to-timber applications where a smooth, rounded head is desirable to prevent snagging and to offer a clean finished look. Use these bolts for outdoor deck framing, garden structures, fence construction, pergolas, and outdoor furniture assemblies. They pair well with standard nuts and washers to create robust joints that withstand seasonal expansion and contraction in exposed environments.
Installation tips for lasting performance
- Pre-drill pilot holes slightly smaller than the bolt diameter to minimize wood splitting, especially in hard or finished lumber.
- Insert the bolt through one piece, align with the receiving nut on the opposite side, and tighten with a standard nut and washer for a secure, flush connection.
- For outdoor installations, consider using compatible stainless or galvanized nuts and washers to maintain corrosion resistance throughout the fastener assembly.
- Store in a dry place after use to preserve the boxed 100-pack for future projects.
Whether you’re building a durable backyard deck or reinforcing a weather-prone fence line, these Hillman carriage bolts deliver dependable strength, straightforward installation, and long-lasting protection against the elements. A practical, ready-to-use solution for professional handymen and DIY enthusiasts alike.
