This photo shows typical interfaces between heat sinks and Humphrey's SRG equipment.  The black cylinders are the upper and lower heat sinks. The top Fig. shows the top heat sink and an 18 pin Bendix connector used to interface to the Humphrey SRG telemetry. The bottom fig shows the bottom heat sink and a 'J' slot used for hanging and aligning the Humphrey SRG gyro to the center sub. The top heat sink is supplied with a Bendix adapter bushing which is not shown in this photo. Note the wiring channel seen on the top Fig. The undercut bands machined on the body of the heat sink are for Kapton tape that ties down the wire bundle that runs in the wiring channel of the heat sink