5/16 in. x 2 in. Galvanized Carriage Bolts (100-Pack)

Heavy-duty Hillman carriage bolts made of steel with a hot-dipped galvanized finish for superior corrosion resistance. Ideal for fastening wood to wood or metal where a smooth, low-profile dome head is desired.

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Key Features:

• Corrosion Protection: Hot-dipped galvanized coating stands up to outdoor and marine environments
• Secure Hold: Square neck under head locks into wood to prevent spinning during tightening
• Clean Finish: Dome head provides a semi-flush, washerless appearance
• Durable Construction: Grade 2 steel with coarse threads for reliable strength
• Bulk Value: 100 bolts per retail package for large projects or jobsite stock

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Specifications Table:

Specification	Details
Diameter	5/16 inch
Length	2 inch
Material	Steel
Finish	Hot Dipped Galvanized
Grade	2
Thread Type	Coarse (UNC)
Unit of Measurement	SAE
Head Style	Carriage (dome head with square neck)
Number in Package	100 pack
Packaging Type	Boxed
Intended Use	Fastening wood to wood or wood to metal
Package Dimensions (L x W x H)	4.3 in x 4.3 in x 3.5 in
Package Weight	5.4 lbs

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Frequently Asked Questions (FAQ):

Q: Are nuts and washers included?
A: No—this listing is for bolts only; pair with compatible 5/16 in. hot-dipped galvanized hardware.

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Q: What thread type do these bolts have?
A: They use coarse (UNC) threads.

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Q: Can these be used outdoors?
A: Yes. The hot-dipped galvanized finish offers strong rust resistance suitable for exterior use.

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Q: What materials can I fasten with these?
A: Designed for fastening wood to wood or wood to metal where the square neck can bite into wood.

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Q: Do I need a tool to hold the head while tightening?
A: No. The square underside locks into the wood to prevent turning; tighten from the nut side.

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Rugged Hardware with a Clean, Classic Dome

I love the quiet confidence of a domed carriage head—sleek, purposeful, and timeless. The hot-dipped galvanization reads as a soft, matte silver that complements weathered woods and raw steel. Use these to anchor benches or garden gates; the rounded tops become subtle jewelry on rustic surfaces. Practical yet polished, they’re the finishing touch for elevated, outdoor craftwork.

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Build with confidence—add this 100-pack of galvanized carriage bolts to your cart and tackle your next outdoor project right.