Hillman
Hillman 5/16 in. Diameter x 4 in. Length Heat Treated Steel Hex Head Cap Screw, Grade 8, Coarse Thread, 50-Pack
Hillman 5/16 in. Diameter x 4 in. Length Heat Treated Steel Hex Head Cap Screw, Grade 8, Coarse Thread, 50-Pack
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Hillman Grade 8 5/16 in. x 4 in. Hex Cap Screws (50-Pack)
Heavy-duty Hillman hex head cap screws engineered from heat-treated steel for high-strength fastening. Grade 8, coarse-thread bolts with washer face under the head deliver reliable clamping power for automotive, machinery, and construction projects.
Key Features:
- Grade 8 Strength: Heat-treated steel provides superior tensile strength for demanding applications
- Coarse Thread: Enhances grip and resists stripping in general-purpose fastening
- Washer Face Under Head: Improves load distribution and sealing
- Partially Threaded Shank: Adds shear strength where it matters
- Bulk Value Pack: 50 screws sized 5/16 in. diameter x 4 in. length
Specifications Table:
| Specification | Details |
|---|---|
| Diameter | 5/16 inch |
| Length | 4 inch |
| Material | Steel |
| Finish | Heat Treated (yellow dichromate) |
| Grade | 8 |
| Thread Type | Coarse (USS) |
| Head Style | Hex head with washer face |
| Threading | Partially threaded shank |
| Number in Package | 50 pack |
| Packaging Type | Boxed |
| Use | For use with a nut or tapped hole; tighten with wrench or drill |
| Package Dimensions (L x W x H) | 5.3 in x 4.3 in x 3.2 in |
| Package Weight | 5.2 lb |
Frequently Asked Questions (FAQ):
Q: What size and thread are these bolts?
A: They are 5/16-inch diameter by 4-inch length with coarse threads (USS).
Q: Are these fully threaded?
A: No, they are partially threaded along the shank for added shear strength.
Q: What grade and material are they?
A: Grade 8 heat-treated steel for high-strength applications.
Q: Do they have any special head features?
A: Yes, a washer face under the hex head helps create a better seal and distributes load.
Q: How many bolts are included?
A: 50 bolts per box.
Industrial Strength with Streamlined Utility
These grade 8 hex cap screws evoke a crisp, utilitarian beauty—precision lines and a confident, engineered profile. I love the subtle geometry of the hex head paired with a substantial shank, a quiet nod to performance. Decant them into a clear jar on an open shelf in the workshop for a sculptural, ready-to-work vignette. Strength this considered becomes a staple of refined, hardworking spaces.
Choose Hillman Grade 8 hex cap screws for dependable, high-strength fastening in your next build.
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