Hillman 5/16 in. x 4 in. Zinc Carriage Bolts (50-Pack)

Durable zinc-plated steel carriage bolts for fastening wood to wood or metal. The smooth, domed head provides a clean, low-profile finish while the square neck locks into material for easy one-wrench installation.

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Key Features:

• Zinc-Plated Protection: Resists rust and corrosion for indoor and light outdoor use
• Low-Profile Domed Head: Clean, semi-flush appearance ideal where clearance is tight
• Square Neck Locking: Grips into wood to prevent spinning—no washer needed under head
• Versatile Fastening: Commonly used to attach a wood face to wood or metal frames
• Pre-Drill Guidance: Drill pilot holes matching 5/16 in. diameter for best results

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Specifications Table:

Specification	Details
Brand	Hillman
Product Type	Carriage bolt
Material	Steel
Finish	Zinc-plated
Diameter	5/16 in.
Thread Size	5/16-18
Length	4 in.
Head Style	Domed, low-profile
Neck Type	Square neck
Pack Quantity	50 pieces
Intended Use	Fasten a wood face to wood or metal
Installation	Pre-drill hole to match bolt diameter

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Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts fasten?
A: They’re designed to fasten a wood face to either wood or metal.

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Q: Do I need a washer under the head?
A: No. The square neck locks into the material, eliminating the need for a flat washer under the head.

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Q: Is pre-drilling required?
A: Yes, pre-drill a hole matching the 5/16 in. diameter for proper fit and to prevent splitting.

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Q: Are these suitable for outdoor use?
A: The zinc plating offers moderate corrosion resistance; for harsh or long-term outdoor exposure, consider hot-dipped galvanized or stainless options.

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Q: What is included in the package?
A: 50 pieces of 5/16 in.-18 x 4 in. zinc-plated steel carriage bolts.

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Streamlined Hardware with a Polished, Practical Edge

A brushed zinc sheen brings a subtle sophistication to utilitarian joinery, letting functional details read as thoughtfully edited accents. The domed head sits like a small metallic button, smoothing transitions on furniture bases and garden builds. Style it exposed on a bench or planter where the quiet glint complements natural wood grain. Consider it a finishing touch that makes everyday construction feel impeccably tailored.

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Upgrade your next build with durable, clean-finished fastening—add this 50-pack of Hillman zinc carriage bolts to your cart now.