Through bolts A4 are high-performance bolts made from austenitic stainless steel, which provides excellent resistance to corrosion. They are typically used for heavy-duty applications that require high tensile strength, such as anchoring steel structures to concrete, or securing machinery to floors. Through bolts A4 have a threaded section at one end and a nut and washer at the other end. To install, a hole is drilled into the material and the through bolt is inserted. As the nut is tightened, the bolt expands and presses against the sides of the hole, providing a secure and reliable anchor. The A4 designation indicates that the steel used in the through bolt has a minimum chromium content of 17% and a minimum nickel content of 12%. This makes it highly resistant to corrosion in harsh environments, such as coastal or industrial areas. At TIMco, we offer a range of through bolts A4 in various sizes to suit your needs. Our through bolts A4 are manufactured to the highest quality standards, ensuring that they provide a secure and long-lasting anchor solution for your application.