5-14. Which, if any, of the following fasteners may be replaced by self-tapping screws? 1. Standard screws 2. Standard nuts 3. Standard bolts 4. None of the above 5-15. Which of the following screws are used to hold gears on a shaft? 1. Structural screws 2. Machine screws 3. Self-tapping screws 4. Setscrews 5-16. What    nonself-locking    nut    is    used    with    a drilled-shank AN hex head bolt? 1. Castellated shear nut 2. Castle nut 3. Plain nut 4. Wing nut 5-17. Plain hex nuts are NOT used to a great extent on aircraft structures for which of the following reasons? 1. They    require    auxiliary    safety    locking devices 2. They cannot withstand very large tensional loads 3. They   are   not   designed   to   accommodate cotter pins or safety wire 5-18. What type of nut is commonly used on battery connections? 1. Wing nut 2. Plain nut 3. Castle nut 4. Castellated shear nut 5-19. Which  of  the  following  nuts,  when  used  to provide   a   tight   connection,   will   not   loosen under vibration? 1. Self-locking nuts 2. Castellated shear nuts 3. Wingnuts 4. Plain checknuts 5-20. What are the two general types of self-locking nuts? 1. Boots and Flexloc 2. Elastic stop and nonelastic stop 3. All-metal and nonmetallic insert 4. Flexloc and nonmetallic insert 5-21. Which of the following is a nonmetallic type of self-locking nut? 1. Elastic stop 2. Camloc 3. Flexloc 4. Boots 5-22. Access    panels    are    usually    secured    to    the aircraft by what type of screws or fasteners? 1. Machine screws 2. Structural screws 3. Self-tapping fasteners 4. Turnlock fasteners 5-23. Which  of  the  following  common  fasteners  is referred to as a Turnlock fastener? 1. Dzus 2. Camloc 3. Airloc 4. Each of the above 5-24. Which   of   the   following   parts   of   a   Camloc fastener are secured to the access door? 1. Stud and grommet only 2. Stud and receptacle only 3. Grommet and receptacle only 4. Stud, grommet, and receptacle 5-25. What     is     the     difference     between     Camloc high-stress panel fasteners and screws? 1. The deep No. 2 Phillips recess in the stud head 2. The bushing in which the stud is installed 3. Both 1 and 2 above 4. The  deep  Reed  and  Prince  recess  in  the stud head 5-26. To  remove  an  Airloc  stud  from  a  panel,  you should take what action? 1. Remove the cross pin 2. Remove the grommet 3. Remove the snap ring 4. Saw it into two pieces 5-27. Which  of  the  following  is  a  component  of  a heavy duty Dzus fastener but not of a light duty one? 1. Stud 2. Spring 3. Grommet 4. Receptacle 5-22