Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 3/4 in., 100-Pack

These Hillman Grade 5 hex head cap screws are heat-treated zinc-plated steel for dependable strength and wear resistance. Sized 5/16 in. diameter by 3/4 in. length with fine threads, they’re ideal for fastening into tapped holes or use with nuts in automotive, machinery, and general construction projects.

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Key Features:

• Durable Grade 5 Steel: Heat-treated zinc finish resists wear and corrosion
• Hex Head Design: Washer face under head provides a better seal and load distribution
• Fine Thread: Partially threaded shank offers strong hold in metal assemblies
• Versatile Use: For tapped holes or paired with nuts; tighten with wrench or drill
• Bulk Pack Value: 100 screws for shop, jobsite, or maintenance stock

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Specifications Table:

Specification	Details
Brand	Hillman
Diameter	5/16 inch
Length	3/4 inch
Material	Steel
Finish	Heat-treated zinc
Grade	Grade 5
Thread Type	Fine
Threading	Partially threaded shank
Head Type	Hex head with washer face under head
Unit of Measurement	SAE
Number in Package	100 pack
Packaging Type	Boxed
Tightening Method	Use wrench or drill/driver
Category	Hex Bolts
Package Dimensions (L x W x H)	3.4 in x 3.5 in x 2 in
Package Weight	2.6 lbs

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Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are Grade 5 screws that are partially threaded along the shank.

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Q: What thread type do they use?
A: Fine thread.

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Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill/driver and the appropriate hex socket.

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

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Q: What size are these screws?
A: 5/16 inch diameter by 3/4 inch length.

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Industrial polish in a precise, compact fastener

The clean geometry of a hex cap screw brings a tailored order to utility—streamlined, purposeful, quietly strong. Here, the heat-treated zinc sheen adds a subtle luminosity, a refined note against raw wood or cool steel. Style them with matte-black hardware and brushed metal accents to echo their crisp, engineered profile. Consider this your small-but-mighty essential for projects that demand durability with a disciplined aesthetic.

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Stock up on these Grade 5 fine-thread cap screws today for reliable, ready-to-go fastening on every project.