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

These Hillman hex head cap screws are Grade 5 steel with a heat-treated zinc finish for strength and wear resistance. Coarse-threaded and partially threaded, they’re ideal for fastening into tapped holes or with nuts in general construction and repair.

Key Features:

• Grade 5 Strength: Heat-treated steel delivers reliable tensile strength for demanding applications
• Corrosion-Resistant Finish: Zinc coating helps protect against rust and wear
• Coarse Thread, Partially Threaded: Ensures strong hold and easier starts in tapped holes
• Washer Face Under Head: Provides a better seal and load distribution
• Bulk Value Pack: 100 screws sized 5/16 in. diameter x 3/4 in. length for projects and maintenance

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank with a coarse thread.

Q: What grade are these bolts?
A: Grade 5, suitable for many automotive, machinery, and general fastening uses.

Q: Can I use them outdoors?
A: The zinc finish offers basic corrosion resistance, but for harsh or marine environments consider galvanized or stainless hardware.

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

Q: Do they include nuts or washers?
A: No, this pack includes only hex head cap screws.

Industrial polish with everyday reliability

A crisp hex head in a cool zinc tone brings an understated, utilitarian elegance to built-ins and workshop fixtures. I love the washer-faced head—such a thoughtful detail that sits flush and clean. Pair these with matte-black brackets or raw oak shelving to strike a refined, hardworking contrast. It’s the quiet hardware hero that makes a space feel intentionally crafted.

Equip your project with Grade 5 strength—add this 100-pack to your cart and fasten with confidence.