The most common fastener used to attach a motor to a bedplate is a hex head bolt with __________.

The most common fastener used to attach a motor to a bedplate is a hex head bolt with two flat washers, a lock washer, and a nut. This configuration is effective for several reasons.

Using two flat washers helps to distribute the load of the bolt over a larger surface area, reducing the risk of damage to both the motor and the bedplate. The flat washers also help to create a more stable and secure connection, particularly in applications where vibration might loosen a bolt over time.

The inclusion of the lock washer is crucial because it provides added resistance against loosening, ensuring that the joint remains secure during operation. Lock washers are designed to grip the bolt and the surface they are attached to, preventing them from turning, which is especially important in motor applications where vibrations can be significant.

The combination of these components—two flat washers, a lock washer, and a nut—creates a reliable fastening solution that meets the demands of securing a motor to a bedplate safely and effectively.