1. Hardware, Fasteners, Drills,& Thread Repair Chapter 6 Page 53

2. Cool Facts Bolts = Cap Screws Bolts = Cap Screws UNF = Unified National Fine (fine thread) UNF = Unified National Fine (fine thread) UNC = Unified National Course (course thread) UNC = Unified National Course (course thread) Temper = Metal is heated and quenched (cooled in water or oil) for extra strength Temper = Metal is heated and quenched (cooled in water or oil) for extra strength Clamping Force = This is how the bolt holds in or parts together (not the threads) Clamping Force = This is how the bolt holds in or parts together (not the threads) Tensile Strength = Maximum limit before breaking Tensile Strength = Maximum limit before breaking

3. Types of Fasteners

4. Bolt Grades 2 5 68 4.65.88.810.9 U.S Metric The higher the numbers - The higher the tensile strength Don’t forget to use the same grade nut with the bolt/Oh yea, the nut has a grade system too! Weaker & Cheaper Harder & More $

5. Thread Lubricant and Locks Antiseize = lube that keep the threads from rusting Antiseize = lube that keep the threads from rusting Oil Oil Grease Grease * Be careful not to use too much, hydro-lock can happen * Be careful not to use too much, hydro-lock can happen Thread lock Thread lock Red = Permanent Red = Permanent Blue = Semi Permanent Blue = Semi Permanent

6. Removing Studs

7. Drill Bits Used to make new holes, bigger holes, or to repair threaded holes (with taps). Used to make new holes, bigger holes, or to repair threaded holes (with taps).

8. Screw Extractors

9. Thread Measuring

10. Thread Making and Restoring

11. Taps

12. Thread Inserts Drill an oversized hole Drill an oversized hole Tap the hole Tap the hole Apply loctite to insert Apply loctite to insert Screw insert in with mandrel Screw insert in with mandrel

13. Dies

14. Torque Sequence You will find the sequence in the shop manual

16. Your Job. Complete chapter Questions 1-10 (review) and 1-5 (ASE-style). Page 66. Complete chapter Questions 1-10 (review) and 1-5 (ASE-style). Page 66. Write on a separate paper and write out the complete question and your answer. ( do not write the other answer options). Write on a separate paper and write out the complete question and your answer. ( do not write the other answer options). Complete the chapter worksheet (I will give it out). You may write on it. Complete the chapter worksheet (I will give it out). You may write on it. File these items in your note book. File these items in your note book. Notebooks will be graded in the future. Notebooks will be graded in the future.