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:

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.