Hot Sale 5/16-18 X 8 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic Usa (225) Holiday Edition [sUbo63ph]

5/16-18 Hex Cap Screw: Quality and Durability

Looking for a reliable and high-quality hex cap screw? Our 5/16-18 x 8 Grade 8 Hex Cap Screw is the perfect choice for your needs. Engineered in the USA from medium carbon alloy steel, this screw offers exceptional strength and durability. With diameters ranging from 1/4 to 1 1/2 inches, our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications, ensuring top-notch performance in a variety of applications. Over 1 1/2 inches, the material meets or exceeds ASTM A354 Grade BD, providing even greater durability and reliability.

• Manufactured in the USA for quality assurance
• Meets or exceeds SAE J429 Grade 8 specifications

Superior Plating and Hardness

Our yellow zinc plated bolting not only offers a sleek appearance but also provides excellent corrosion resistance. This plating meets or exceeds ASTM F1941 standards, ensuring long-lasting protection against environmental factors. The typical hardness on diameters 1/4 to 2 1/2 inches is HRC 33-39, while diameters over 2 1/2 inches range from HRC 31-39. This hardness ensures that the screw maintains its integrity and performance over time.

• Yellow zinc plated for corrosion resistance
• Meets or exceeds ASTM F1941 standards

Strength and Tensile Performance

Strength is paramount in any fastener, and our 5/16-18 x 8 Grade 8 Hex Cap Screw does not disappoint. On diameters 1/4 to 2 1/2 inches, the screw boasts a minimum tensile strength of 150,000 psi, while diameters over 2 1/2 inches meet a minimum of 140,000 psi. This level of tensile strength ensures that the screw can withstand heavy loads and harsh conditions, making it ideal for a wide range of industrial and construction applications.

• Minimum tensile strength of 150,000 psi (1/4 to 2 1/2 inches)
• Minimum tensile strength of 140,000 psi (over 2 1/2 inches)