Hillman Grade 8 Hex Cap Screws, 5/16" x 3", 100-Pack

Heavy-duty Grade 8 hex head cap screws built from heat-treated steel for demanding fastening applications. Coarse-threaded with a washer face for secure seating and long-lasting performance. Ideal for machinery, automotive, and construction projects.

Key Features:

• Heavy-Duty Grade 8: Engineered for high-strength applications and superior load-bearing performance
• Heat-Treated Steel: Enhanced durability and wear resistance for long service life
• Coarse Thread: Reliable grip and faster assembly in tapped holes or with nuts
• Washer Face Under Head: Better seal and seating against surfaces to reduce loosening
• Bulk Value Pack: 100 screws sized 5/16 in. diameter x 3 in. length

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank.

Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill fitted with the appropriate hex socket.

Q: What is the thread type?
A: Coarse thread.

Q: What material and finish do they have?
A: Made of heat-treated steel; yellow dichromate style finish referenced for strength and wear resistance.

Q: Can these be used in automotive or machinery applications?
A: Yes, as Grade 8 heat-treated steel hex cap screws, they are suitable for high-stress applications in automotive and machinery.

Industrial Strength with Clean, Purposeful Lines

These hex cap screws bring a refined, utilitarian elegance to any build—sleek heads and crisp geometry that read as confident and modern. The heat-treated Grade 8 steel delivers a commanding presence and resilience. Style them with blackened hardware and raw oak shelving to underscore a crafted, industrial vibe. Essential, functional, and impeccably strong—this is hardware that elevates the everyday.

Secure your projects with trusted Grade 8 strength—add this Hillman 100-pack to your toolkit today.