Hillman 5/8 in. Diameter x 3-1/2 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, Coarse Thread, 25-Pack
Regular price $86.99Hillman Grade 8 Hex Cap Screws, 5/8 in. x 3-1/2 in., 25-Pack
Heavy-duty Grade 8 hex cap screws engineered for high-strength fastening in automotive, machinery, and construction applications. Crafted from heat-treated steel with a washer face under the head and coarse threads for reliable grip and easy assembly.
Key Features:
- Grade 8 Strength: Heat-treated steel delivers superior tensile strength for demanding projects
- Coarse Thread Grip: Partially threaded shank ensures strong hold in tapped holes or with nuts
- Washer Face Under Head: Improved seal and load distribution to help prevent loosening
- Durable Finish: Yellow dichromate treatment enhances wear and corrosion resistance
- Convenient Bulk Pack: 25 boxed screws for efficient stocking and jobsite readiness
Specifications Table:
| Specification | Details |
|---|---|
| Diameter | 5/8 inch |
| Length | 3-1/2 inch |
| Material | Heat-treated steel |
| Grade | 8 Grade (USS) |
| Finish | Yellow dichromate; heat-treated |
| Head Type | Hex head with washer face |
| Thread Type | Coarse |
| Threading | Partially threaded along shank |
| Number in Package | 25 pack |
| Packaging Type | Boxed |
| Recommended Tool | Wrench or drill/driver |
| Use | For use with a nut or in a tapped hole |
| Package Dimensions (L x W x H) | 5.3 in x 4.3 in x 3.2 in |
| Package Weight | 9.2 lbs |
Frequently Asked Questions (FAQ):
Q: Are these fully threaded?
A: No. They are Grade 8 hex cap screws with partial threading along the shank.
Q: What tools are recommended for installation?
A: Tighten with a wrench or compatible driver; ensure proper torque for Grade 8 fasteners.
Q: Can these be used outdoors?
A: The yellow dichromate finish offers improved corrosion resistance; however, for long-term exposure, consider matching washers/nuts and appropriate protective practices.
Q: What thread type do they use?
A: Coarse thread, suitable for general fastening applications.
Q: Do they include nuts or washers?
A: No. This pack includes only the hex cap screws; purchase compatible nuts and washers separately.
Industrial Strength with Refined Detail
These Grade 8 hex cap screws bring a crisp, engineered presence to any build—precision and polish in one gesture. The yellow dichromate finish adds a subtle golden accent that feels both rugged and refined. Style them with exposed hardware on custom shelving or machinery-inspired furniture for a sophisticated utility look. A staple of luxurious, performance-minded design.
Equip your project with Grade 8 reliability—add this 25-pack of Hillman hex cap screws to your cart today.
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