5/16 in. x 4 in. Hot-Dipped Galvanized Carriage Bolts (50-Pack)

Durable Hillman carriage bolts designed for fastening wood-to-wood or wood-to-metal with a smooth, dome head finish. Hot-dipped galvanized steel resists rust for long-lasting outdoor and structural applications.

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Key Features:

• Rust-Resistant Protection: Hot-dipped galvanized steel stands up to moisture and outdoor exposure
• Secure Hold: Square neck locks into wood to prevent spinning during tightening
• Clean Finish: Round, low-profile head provides a semi-flush appearance without a washer
• Strong and Reliable: Grade 2 steel with coarse threads for general construction fastening
• Bulk Value: 50 bolts per box for projects and jobsite needs

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Specifications Table:

Specification	Details
Brand	Hillman
Diameter	5/16 inch
Length	4 inch
Material	Steel
Finish	Hot Dipped Galvanized
Grade	2
Thread Type	Coarse
Unit of Measurement	SAE
Head Style	Round carriage head with square neck
Number in Package	50 pack
Packaging Type	Boxed

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Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 5/16 in. diameter by 4 in. length with coarse threads.

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Q: What material and finish are used?
A: They are made of Grade 2 steel with a hot-dipped galvanized finish for corrosion resistance.

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Q: Are nuts and washers included?
A: No, this listing is for bolts only; purchase matching 5/16 in. nuts and washers separately if needed.

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Q: Where are these bolts typically used?
A: Ideal for fastening wood to wood or wood to metal in decks, fences, and general construction.

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Q: How many come in the package?
A: 50 bolts per retail package.

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A Clean, Crafted Finish for Outdoor Builds

The rounded carriage head delivers a neat, unobtrusive accent that lets the wood grain take center stage. I love the tactile, chalky sheen of hot-dipped galvanization—it feels honest and architectural. Use them in rhythmic rows along a fence or garden gate for subtle texture and cohesion. It’s the kind of quiet hardware that elevates everyday structures into refined, lasting design.

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Choose these galvanized carriage bolts for a clean look and rust-proof strength on your next outdoor build.