Zinc-Plated Steel Carriage Bolt, 3/8 in. x 2-1/2 in. (50-Pack)

Durable Hillman carriage bolts made of zinc-plated steel for rust-resistant fastening in wood-to-wood or wood-to-metal projects. The round head and square neck provide a secure, semi-flush finish without a washer, ideal for structural and furniture applications.

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Key Features:

• Rust-Resistant Finish: Zinc plating helps resist corrosion and delivers a clean, consistent look
• Secure Hold: Square neck locks into wood to prevent spinning during installation
• Semi-Flush Appearance: Low-profile round head minimizes the need for washers
• Versatile Use: Suitable for wood-to-wood or wood-to-metal connections
• Bulk Value: Convenient 50-pack for projects and jobsite replenishment

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Specifications Table:

Specification	Details
Material	Zinc-plated steel
Finish	Zinc-Plated
Diameter	3/8 in
Length	2-1/2 in
Thread Type	Coarse
Grade	2
Unit of Measurement	SAE
Packaging Type	Boxed
Number in Package	50
Head Style	Round head with square neck (carriage bolt)
Weight	4.5 lb (pack)
Brand	Hillman

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Frequently Asked Questions (FAQ):

Q: What tools do I need to install these carriage bolts?
A: Use a drill to create a pilot hole and a wrench or socket for the nut; the square neck locks into the wood so a driver on the head is not required.

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Q: Are these bolts suitable for outdoor use?
A: The zinc plating offers basic rust resistance; for harsh outdoor environments, consider hot-dipped galvanized or stainless steel options.

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Q: What thread type do these bolts use?
A: They feature coarse threads compatible with standard SAE nuts and washers.

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Q: Do I need washers under the head?
A: Typically no—the round head provides a semi-flush finish, though washers can be used under the nut if desired.

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Q: What size are these bolts?
A: Each bolt is 3/8 inch diameter and 2-1/2 inches long.

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Streamlined Strength for Timeless Woodwork

These zinc-plated carriage bolts deliver a crisp, industrial sophistication that elevates crafted wood joinery. The smooth domed head offers a refined, minimal profile while the square neck anchors with confidence. Pair them with oiled hardwoods and matte black hardware for a chic contrast that feels both modern and enduring. A small detail with big impact—essential hardware for polished, luxurious builds.

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Secure your projects with dependable, rust-resistant performance—add this 50-pack of Hillman carriage bolts to your cart today.