B51-007-0000220 is an SMB straight clamp plug RF coaxial connector designed for use with RG174/U and 316/U coaxial cables. The connector features a solder center contact and is engineered for reliable RF signal transmission in compact applications. Key dimensional specifications include a body length of 18.49 mm (1.728 inches) and a hex wrench size of 5.95 mm (2.34 inches) for assembly and installation. The straight clamp design provides secure cable attachment while maintaining consistent impedance characteristics. This connector is commonly used in RF and microwave systems, test equipment, and portable communication devices where space constraints and signal integrity are important.