Fasteners in grades A2 and A4, tend to be amongst the most popular ones across global markets. Grade A2, or as commonly known as stainless steel 304 is highly valued for its economical cost and delivering a good performance. Likewise, grade A4, or as known as grade 316 is referred to as marine grade stainless steel. Due to its resistance to seawater and brine solutions, A4 screws work well in marine engineering applications. These fasteners are also resistant to salt spray, which is common in the shipping industry. Although in terms of popularity and availability, it is grade A2 that ranks first, the corrosion resistance and the mechanical strength of A4 supersedes the former, making it a valuable resource in times when high strength and resistance to corrosion is desired at elevated temperatures.