Futuristic 5/8-18 X 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic Usa (25) Special: 35% Discount [ct8TbR2C]

Superior Quality Hex Cap Screws

Introducing our 5/8-18 x 4 Grade 8 Hex Cap Screws, a premium choice for those seeking durability and reliability. These screws are meticulously crafted in the USA from medium carbon alloy steel, ensuring a robust performance in a variety of applications. With diameters ranging from 1/4 to 1 1/2 inches, our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications, and diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD. This product is a testament to our commitment to quality and craftsmanship.

Key Features and Specifications

Experience the superior quality and performance of our yellow zinc plated bolting. Each screw is designed to meet or exceed ASTM F1941 standards, providing exceptional corrosion resistance. The typical hardness on diameters 1/4 to 2 1/2 inches is HRC 33-39, ensuring durability and long-lasting performance. For diameters over 2 5/8 inches, hardness ranges from HRC 31-39, maintaining exceptional strength. With a minimum tensile strength of 150,000 psi for diameters 1/4 to 2 1/2 inches and a minimum of 140,000 psi for diameters over 2 1/2 inches, these screws are built to withstand the toughest conditions.

Practical Applications and Benefits

Our 5/8-18 x 4 Grade 8 Hex Cap Screws are ideal for a wide range of applications, including construction, manufacturing, and automotive industries. The rolled threads ensure a tight and secure fit, while the yellow zinc plating provides additional protection against corrosion. Whether you're working on a home improvement project or a large-scale industrial application, these screws offer the strength, reliability, and peace of mind you need. Trust in the quality and expertise of our domestic USA-manufactured products and elevate your projects to new heights.