Hillman Grade 5 Zinc Hex Head Cap Screws, 5/8 in. x 5 in., 25-Pack

Heavy-duty hex head cap screws engineered from heat-treated zinc-plated steel for reliable clamping strength. Grade 5, partially threaded shanks deliver durable fastening in machinery, automotive, and construction applications.

Key Features:

• Grade 5 Strength: Heat-treated steel provides dependable tensile strength for demanding assemblies
• Corrosion Resistance: Zinc finish helps protect against rust and wear in indoor/outdoor use
• Hex Head with Washer Face: Designed for secure seating and better load distribution
• Partially Threaded Shank: Improves shear strength and alignment in through-bolt applications
• 25-Pack Convenience: Boxed quantity for project efficiency and jobsite replenishment

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank (USS Grade 5).

Q: What material and finish are used?
A: Steel with a heat-treated zinc finish for added strength and corrosion resistance.

Q: What thread type do these bolts use?
A: Coarse thread.

Q: How are they installed?
A: Tighten using a wrench or a compatible driver on the hex head.

Q: What are the bolt dimensions?
A: 5/8 inch diameter by 5 inch length.

Industrial Poise with Polished Purpose

This hex cap screw is the quiet hero—sleek, zinc-kissed steel that anchors a space with confident restraint. I love the refined hex head, its washer face seating flush for a tailored, architectural finish. Use it to showcase exposed fasteners on custom shelving or hardware moments where form meets function. It’s a small luxury with big impact—precision you can see and trust.

Upgrade your builds with Grade 5 strength—add this 25-pack to your cart and fasten with confidence.