3/8 in. x 3 in. Zinc-Plated Carriage Bolts (50-Pack)

Durable Hillman carriage bolts made from zinc-plated steel for rust-resistant fastening in wood-to-wood or wood-to-metal applications. The rounded head creates a smooth, semi-flush finish while the square neck locks into wood to prevent spinning.

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Key Features:

• Rust-Resistant Zinc Plating: Helps protect against corrosion for long-lasting performance
• Self-Locking Square Neck: Prevents bolt rotation in wood for easier installation
• Smooth, Low-Profile Head: Creates a semi-flush finish without a separate washer
• Coarse Thread, SAE Grade 2: Reliable grip for general-purpose fastening
• Bulk 50-Pack: Convenient boxed packaging for projects and job sites

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Specifications Table:

Specification	Details
Diameter	3/8 in
Length	3 in
Material	Steel
Finish	Zinc-Plated
Grade	2
Thread Type	Coarse
Unit of Measurement	SAE
Packaging Type	Boxed
Number in Package	50
Each Weight	5.300 lb
Product Type	Carriage Bolt
Alternative UPC	037504830963

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Frequently Asked Questions (FAQ):

Q: What materials are these bolts best suited for?
A: Designed to fasten a wooden face to wood or metal frames; the square neck bites into wood to prevent spinning.

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Q: Can these be used outdoors?
A: Zinc plating offers rust resistance but may not be ideal for all exterior projects; consider hot-dip galvanized for harsh outdoor environments.

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Q: Do I need a washer under the head?
A: Typically no—the rounded carriage head provides a semi-flush finish that often eliminates the need for a washer.

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Q: What thread type do they have?
A: Coarse thread per SAE standards, suitable for general-purpose fastening.

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Q: What size and length are included?
A: Each bolt is 3/8 inch diameter by 3 inches long; this package contains 50 bolts.

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A Clean, Crafted Finish for Timber Details

These zinc-plated carriage bolts bring a tailored, streamlined note to carpentry—perfect for benches, gates, and statement woodwork. The domed head offers a refined, flush look while the square neck anchors with confidence. Pair them with oiled oak or painted pine to let hardware quietly elevate the piece. A small detail with big impact, they’re the finishing touch of effortless, polished living.

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Secure your project with reliable, rust-resistant carriage bolts—add this 50-pack to your cart today.