🔍 Key Concepts

• Identify which labeled diameter refers to the shaft body, not the tip, hole, or threaded portion • Apply the given tolerances (e.g., +0.000 / -0.003) to find the maximum possible diameter, not the nominal size • Compare the resulting maximum diameter with the answer choices that differ only by a few thousandths of an inch

💭 Think About

• On the main straight portion of the shaft, what diameter is written, and what tolerance range is attached to it? • If a dimension shows +0.000 / -0.003 inch, what are the minimum and maximum actual sizes the part can be? • Does the threaded portion’s callout (5/8-18) change the basic maximum diameter compared to the smooth shaft dimension, or just describe the thread form?

✅ Before You Answer

• Be sure you are using the diameter dimension for the long central shaft section, not the smaller reduced section or the hole • Carefully apply the tolerance sign: +0.000 / -0.003 means the part can only be smaller, not larger, than nominal • Convert the nominal size (5/8 inch) to decimal (0.xxx) and compare the largest allowed value with the given choices