Hillman Grade 5 Zinc Hex Head Cap Screws, 5/16 in. x 1 in., 100-Pack

These Hillman hex head cap screws deliver reliable fastening strength for automotive, machinery, and general construction projects. Made from grade 5 heat-treated steel with a zinc finish, they resist wear and corrosion while providing secure clamping with a washer face under the head.

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Key Features:

• Durable Grade 5 Steel: Heat-treated for increased tensile strength and wear resistance
• Corrosion-Resistant Zinc Finish: Helps protect against rust in indoor and covered outdoor applications
• Hex Head with Washer Face: Provides better seating and load distribution for a tight, secure hold
• Partially Threaded Shank: Ideal for clamping and alignment in structural and machinery joints
• Convenient Bulk Pack: 100 screws sized 5/16 in. diameter x 1 in. length for high-volume jobs

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Specifications Table:

Specification	Details
Diameter	5/16 inch
Length	1 inch
Material	Steel
Finish	Heat Treated Zinc
Grade	Grade 5
Head Style	Hex head with washer face
Thread Type	Coarse (USS)
Threading	Partially threaded shank
Number in Package	100 pack
Packaging Type	Boxed
Tightening Method	Wrench or drill/driver
Unit of Measurement	Imperial (size listed in inches)

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Frequently Asked Questions (FAQ):

Q: What tools are needed for installation?
A: Tighten with a wrench or compatible socket; a drill/driver with socket adapter may also be used.

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Q: Are these fully or partially threaded?
A: They are partially threaded along the shank, typical of hex cap screws.

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Q: What is the thread type?
A: Coarse thread (USS).

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Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for harsh or wet environments, consider stainless or hot-dipped galvanized fasteners.

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Q: What grade are these bolts?
A: Grade 5, suitable for medium-strength applications.

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Quiet Strength, Clean Hardware Poetry

In any refined space, the details do the heavy lifting—these zinc-kissed cap screws bring a polished, utilitarian elegance. I love the crisp hex head with its subtle washer face, delivering both form and function. Style them with brushed steel brackets or matte-black hardware to create a nuanced contrast that feels intentional. Essential, dependable, and chic—this is the hardware that makes luxury look effortless.

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Equip your next project with dependable strength—add this 100-pack of Hillman grade 5 hex head cap screws to your cart today.