Hillman Galvanized Carriage Bolts, 5/16 in. x 6 in., 50-Pack

Heavy-duty hot-dipped galvanized steel carriage bolts for fastening wood-to-wood or wood-to-metal with superior rust resistance. The domed head and square neck lock into place for a clean, semi-flush finish without a washer. Ideal for outdoor projects, decking, fencing, and structural assemblies.

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Key Features:

• Corrosion Protection: Hot-dipped galvanization resists rust for long-lasting outdoor performance
• Clean Finish: Domed head provides a semi-flush appearance and eliminates the need for a washer
• Self-Locking Design: Square neck prevents spinning for easier installation in wood
• Durable Build: Grade 2 steel with coarse threads for reliable fastening
• Bulk Value: 50-piece boxed pack for project efficiency

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Specifications Table:

Specification	Details
Brand	Hillman
Finish	Hot Dipped Galvanized
Material	Steel
Grade	2
Diameter	5/16 inch
Length	6 inch
Thread Type	Coarse
Unit of Measurement	SAE
Head Style	Carriage (domed head with square neck)
Number in Package	50 pack
Packaging Type	Boxed
Category	Carriage Bolts
Package Dimensions	6.8 in L x 4.5 in W x 3.3 in H
Package Weight	6.6 lbs

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Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts be used with?
A: They’re 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: Are these suitable for outdoor use?
A: Yes. The hot-dipped galvanized finish offers strong rust resistance, making them ideal for exterior applications.

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Q: Do I need washers under the head?
A: No. The flat, domed head is intended to create a semi-flush finish without a washer.

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Q: What nut type should I use?
A: Use matching 5/16 in. coarse-thread (SAE) nuts and washers as needed on the threaded end.

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

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Sculpted Utility with a Weathered Edge

The domed profile and galvanized sheen lend a refined industrial note to outdoor structures. Its square-neck detail locks into wood, creating a clean, uninterrupted surface that feels intentional. Pair with cedar or painted pickets to elevate fencing and deck railings with subtle hardware accents. A must-have for polished, durable builds that embrace luxury in the details.

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Secure your projects with galvanized reliability—add this 50-pack of Hillman carriage bolts to your cart today.