Hillman Grade 8 Hex Head Cap Screws, 9/16 in. x 4 in. (25-Pack)

Heavy-duty Hillman hex head cap screws deliver reliable fastening for structural and machinery applications. Made from heat-treated Grade 8 steel with a washer face under the head, they provide high torque capability and long-lasting wear resistance.

Key Features:

• Grade 8 Strength: Heat-treated steel offers superior tensile strength for demanding loads
• High Torque Capability: Hex cap head with machine threads ensures secure tightening with wrench or driver
• Better Seal: Integrated washer face under head improves contact and load distribution
• Durable Finish: Yellow dichromate treatment resists wear and corrosion
• Bulk Convenience: 25 pieces per box for shop or jobsite efficiency

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: Each bolt is 9/16 in. diameter and 4 in. length, partially threaded.

Q: What thread type do they use?
A: They have coarse machine threads (USS).

Q: Are these suitable for high-stress applications?
A: Yes. They are Grade 8, heat-treated steel designed for high-strength fastening.

Q: Do they include nuts or washers?
A: No. This package includes only the hex head cap screws.

Q: How many are in the package?
A: 25 screws per retail package.

Industrial Strength, Polished Precision

These Grade 8 cap screws bring an elegant order to the unseen structure of your projects, fusing rigor with refinement. The hex head silhouette and washer-faced design feel intentional—clean, engineered, and confident. Style them with blackened steel brackets or oiled oak to underscore a modern, utilitarian narrative. Consider them the quiet luxury of hardware: purposeful, enduring, and impeccably made.

Choose Hillman Grade 8 cap screws for dependable, high-torque fastening that elevates every build.