4-38. 4-39. 4-40. 4-41. 4-42. What feature control symbol should you use to indicate angularity? 1. 2. 3. 4. When accuracy is critical, what method should you use to draw screw threads? 1. Simplified 2. Schematic 3. Detailed 4. Minimal representation How many threads per inch are on a bolt with an external thread designation of 1/4- 35 UNC-2? 1. 15 2. 25 3. 35 4. 70 Which bolt has a left-handed fine thread? 1. 1/4-35-NF-LH-2 2. 1/4-LHNC-35-2 3. 2-3501/4-NF 4. 1/4-35-NCLH-2 What is the term for the surface of a thread that corresponds to the major diameter of an internal thread and minor diameter of an external  thread? 1. Crest 2. Root 3. Depth 4. Pitch 4-43. 4-44. 4-45. 4-46 How should you determine the pitch of a thread? 1. Multiply the measurement of the lead by the length of the external threads 2. Measure the thread depth and multiply by the threads per inch 3. Multiply threads per inch by length of external threads 4. Measure parallel to the axis a point on one thread to a corresponding point on the next thread On a machine drawing with a circular pitch of 14 and a root diameter of 12, how many gear teeth should you draw? 1. 922 2. 644 3. Only enough to identify dimensions 4. Only enough to interface with adjacent gears What term refers to the diameter of the addendum circle? 1. Dedendum 2. Addendum 3. Choral pitch 4. Outside diameter How should you mathematically calculate the number of teeth on a gear? 1. Multiply the diametrical pitch by the diameter of the pitch circle 2. Multiply the addendum circle by the radii 3. Multiply the circular pitch by the diametral pitch 4. Multiply the root diameter by the outside diameter and divide by 360 25