Shear pin. Shear pins are designed to break in half if the auger strikes a hard object to prevent damage to the transmission and engine. If the shear pin is broken, the auger won’t be able to turn.The retaining clip is not included—you must purchase it separately to complete the assembly.
MTD snowblower shear bolt. If the snowblower's auger hits a hard object, the shear bolt breaks in half to prevent damage to the transmission and engine. If the shear bolt is broken, the auger won’t turn. Does not include nuts, see related item.