This thermistor has been upgrade now.
Easy to install Hex M3 Stud Thermistor Features:
Working temperature limit of 260C due to high temp. industrial epoxy resin used.
M3x0.5 threaded. Easily installed on hotend heater block, such as E3D V6 heater block.
Reprap wiki for more details on thermistors.
Thermistor temperature value table for firmware, if you need one.
Connector type: JST 2 pin connector, 2.5mm spacing.
M3 Stud threaded length: 3mm
Hex Body length: 6mm
Length of leads about: 200mm