Hillman Zinc-Plated 3/8 in. x 5-1/2 in. Carriage Bolts (50-Pack)

Durable zinc-plated steel carriage bolts ideal for wood and metal fastening. Coarse-thread Grade 2 bolts with round heads provide smooth, secure installs in structural and DIY projects.

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Key Features:

• Zinc-Plated Protection: Corrosion-resistant finish for indoor/outdoor use
• Strong Steel Construction: Grade 2 steel suitable for general fastening applications
• Clean Round Head Design: Smooth, low-profile head for a finished look
• Coarse Threads: Reliable grip in wood and metal with standard SAE threading
• Bulk Value Pack: 50 boxed bolts for jobsite or workshop efficiency

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Specifications Table:

Specification	Details
Diameter	3/8 in.
Length	5-1/2 in.
Material	Steel
Finish	Zinc-Plated
Head Style	Round
Thread Type	Coarse (UNC)
Grade	Grade 2
Unit of Measurement	SAE
Packaging Type	Boxed
Number in Package	50
Model	57187
Brand	Hillman
Product Type	Carriage Bolt
Weight	7.9 lbs

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Frequently Asked Questions (FAQ):

Q: What nut size fits these bolts?
A: Use standard 3/8 in. coarse-thread (UNC) nuts and washers.

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Q: Are these suitable for outdoor use?
A: Yes, the zinc-plated finish offers corrosion resistance for general outdoor applications; for harsh environments consider galvanized or stainless.

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Q: Do they include nuts or washers?
A: No, this pack contains bolts only; nuts and washers are sold separately.

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Q: What is the thread type?
A: Coarse UNC thread, compatible with SAE hardware.

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Q: Can these be used in wood?
A: Yes, carriage bolts are commonly used in wood; the square neck locks into the wood to prevent turning during tightening.

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Streamlined Strength with Polished Simplicity

These zinc-plated carriage bolts bring a refined, industrial clarity to any build—sleek round heads that read as clean, intentional hardware. The crisp metallic finish punctuates wood grains and painted surfaces with a subtle glint. Pair them with matte black brackets for contrast or echo the shine with brushed nickel accents. A small detail that elevates cabinetry, furniture, and architectural moments into a quietly luxurious statement.

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Upgrade your projects with durable, zinc-plated Hillman carriage bolts—add this 50-pack to your cart today.