Warranty Included [12 PKG] Hex Head Cap Screws Grade 8 Steel Plain 1 3/8-6 x 4″”

Hex Head Cap Screws Grade 8 Steel Plain 1-3/8 in Diameter × 4 in Long (6 UNC Threads)

These hex head cap screws are engineered for demanding, high-load assemblies. Crafted from Grade 8 steel, they deliver exceptional strength and reliability in a range of heavy-duty applications. The plain finish means there is no plating, providing a clean, straightforward option for indoor or protected environments where maximum mating surface contact is important.

• Material: Grade 8 steel for high tensile strength and durability
• Finish: Plain (unplated) for economical use in non-corrosive environments
• Size: 1-3/8 in diameter, 4 in long, 6 UNC threads per inch (coarse)
• Head: Hex head designed for easy tightening with standard wrenches
• Thread: Coarse 6 TPI for quick assembly and strong clamping power
• Applications: Ideal for heavy equipment, machinery, automotive, and structural connections

Pair these screws with the appropriate nuts and washers to ensure a secure, durable joint. For outdoor or highly corrosive environments, consider protective coatings or plating to extend service life.

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State ofCalifornia to cause cancer and birth defects or other reproductive harm. For more information go tohttps://www.P65Warnings.ca.gov.