Based ON my observations, these stainless steel split cotter pins are perfect for industrial and scientific purposes. They are durable and rust-resistant, making them ideal for long-term use in heavy machinery .The pins are easy to install and hold tight ensuring that they won't come loose even under intense pressure. However, the packaging could be improved as the pins were scattered upon arrival. Overall, i highly recommend these fasteners to anyone looking for high-quality, reliable pins for their industrial needs..