M16878/11 SAE/NEMA HP-4 Type K wire have medium walled, extruded fluorinated ethylene propylene (FEP) insulation for high temperature resistance, the temperature range for M16878/11 is from -65°C to 200°C. Commonly used in electronic equipment, computer back panels, ovens, motor leads and similar applications. MIL-W-16878/11 specification is currently referred to as NEMA HP4 Type K.