Dottie Cap screw has type UNC size 1/2 - 13 threads and 13 TPI. It measures 1-1/4-Inch x 1/2-Inch Dia. This cap screw with 3/4-Inch hex head, has sturdy 18 - 8 stainless steel construction, which ensures it safe to use in applications where corrosion resistance is necessary. It is suitable to use in non-critical application with nuts and washers.