The Flange Bolt Kit, Class: 150, Diameter: 4", features hex bolts with a zinc finish designed for high-strength applications. This kit includes bolts that meet Class 150 specifications, ensuring compatibility with various flanged connections. The 4" diameter is ideal for industrial piping systems, providing a secure and leak-proof seal. Constructed from durable materials, these bolts are resistant to corrosion and wear, making them suitable for demanding environments. Perfect for mechanical and plumbing applications, this kit is essential for ensuring reliable connections.