Dottie Cap screw has type UNC size 3/8 - 16 threads and 16 TPI. It measures 1-1/4-Inch x 3/8-Inch Dia. This cap screw with 9/16-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.