The THOMAS & BETTS part 141SST is a high-quality nut lock designed for secure fastening applications. With a thread size of 1/2-13 and 1/2-20, this nut lock ensures a tight and reliable connection. Constructed from durable stainless steel, it offers excellent corrosion resistance and long-lasting performance. The nut lock features a HD diameter of 28.17mm and a thickness of 3.96mm, providing optimal strength and stability. Trust THOMAS & BETTS for top-notch fastening solutions.