Question 146General Subjects - QMED

The correct answer is C) has a headless set screw. The main difference between a common lathe dog and a safety lathe dog is that the safety lathe dog has a headless set screw. This feature allows the safety lathe dog to grip the workpiece more securely and safely, reducing the risk of the workpiece slipping or becoming dislodged during operation. The headless set screw helps to prevent the workpiece from being thrown from the lathe, which could be dangerous. The other answer choices are incorrect because: A) Allowing for misaligned center holes is not a defining feature of a safety lathe dog. B) While a spring-loaded catch can also be a feature of a safety lathe dog, it is not the main difference between common and safety lathe dogs. D) Being more easily centered is not a defining characteristic of a safety lathe dog.