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.

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

Specifications Table:

Frequently Asked Questions (FAQ):

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

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

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

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.

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

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.

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