Hillman 5/16 in. x 4 in. Zinc-Plated Hex Bolt (50-Pack)

Durable Grade 2 steel hex bolt set with a corrosion-resistant zinc-plated finish for general fastening applications. Each 5/16 in. diameter by 4 in. length bolt features partial threading for secure assembly in wood, metal, and construction projects.

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Key Features:

• Corrosion Resistant: Zinc-plated steel helps prevent rust for indoor/outdoor general use.
• Reliable Strength: Grade 2 steel suitable for non-critical structural fastening.
• Standard Thread: 5/16"-18 coarse thread fits common nuts and pre-tapped holes.
• Convenient Value Pack: 50-count box for stocking the shop or jobsite.
• Versatile Applications: Ideal for machinery, furniture assembly, and construction projects.

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Specifications Table:

Specification	Details
Diameter	5/16 in.
Length	4 in.
Thread Size	5/16"-18
Head Type	Hex
Material	Steel
Grade	Grade 2
Finish	Zinc Plated
Pack Quantity	50
Color	Gray
Recommended Use	General Use

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Frequently Asked Questions (FAQ):

Q: What is the thread size and pitch?
A: These bolts are 5/16"-18 coarse thread.

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Q: Are these fully threaded?
A: No, they are partially threaded with a smooth shank section and threaded end.

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Q: What grade are the bolts?
A: Grade 2 steel, suitable for general-purpose fastening.

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Q: Can these be used outdoors?
A: The zinc-plated finish offers basic corrosion resistance; for harsh outdoor or marine environments, consider hot-dip galvanized or stainless steel.

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Q: How many bolts are included?
A: 50 bolts per box.

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Crisp Hardware That Quietly Elevates the Build

There’s a satisfying clarity to a polished hex bolt—clean lines, confident proportion, and a gleam that punctuates joinery with intention. The zinc-plated finish brings a subtle sheen that complements both raw timber and painted steel. Use these 4-inch bolts to create tailored, architectural moments in exposed hardware benches or utility shelving. It’s that refined, reliable detail that makes everyday construction feel effortlessly luxe.

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Stock your shop with this 50-pack of Hillman hex bolts and tackle your next build with dependable, corrosion-resistant fastening.