Industrial SPA-25 Shear Pin Hub from Martin is a torque-transmitting drive component designed to accept a shear pin for overload protection in industrial systems. The SPA-25 model is specified at 5-1/2 in, aligning with the standard size for this line. It is used in drive assemblies where a sacrificial pin protects gears and shafts during overload events by allowing a controlled disengagement.
