Hillman 9/16 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-Pack
Regular price $89.99Hillman 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:
| Specification | Details |
|---|---|
| Diameter | 9/16 inch |
| Length | 4 inch |
| Material | Steel |
| Grade | 8 (USS) |
| Finish | Heat-treated yellow dichromate |
| Head Type | Hex cap with washer face |
| Thread Type | Coarse, partially threaded shank |
| Pieces per Package | 25 |
| Packaging Type | Boxed |
| Brand | Hillman |
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.
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