Copper Lock Nut
Hexagon
Metric
Copper-plated steel
High Tensile Grade 8
Dia: M12
Pitch: 1.75
DIN: 14441
Wrench Size Across Flats: 19mm
A DIN 14441 (often sold as an Exhaust Slotted Nut) is a specialty fastener engineered for the high-vibration and extreme-heat environments of automotive exhaust systems.
