The SF3211-6004 is an SMPM male socket contact featuring a smooth bore interface for T-Flex 405 cable applications. It is engineered for high-frequency performance, operating from DC to 65.0 GHz with a nominal impedance of 50 Ohms and a VSWR of 1.10:1 up to 26.5 GHz. Constructed with a gold-plated beryllium copper body and a passivated stainless steel shroud, this contact ensures durability and signal integrity across an operating temperature range of -55°C to +125°C. Its robust design and low contact resistance make it ideal for high-reliability aerospace and defense applications requiring a secure M38999 size 12 insert fit.