Interface Components Type 43 2100 Series Crimp Sockets A series of professional quality machined 75 Ω type 43 connectors, from Interface Components. These 2100 series straight crimp sockets have gold plated beryllium copper centre contacts and a nickel plated brass body. They feature a push pull latching mechanism allowing for fast secure connections first time every time. The Type 43 connectors were designed for British Telecom for use within digital and telephone exchanges. They are tested to BT specification RC8003 and operate within the 3GHz frequency range. A crimp tool 916-0524 is also available separately.