Unit 9 Blue Print (NEIEP 180/185) Questions with correct answers already passed

Unit 9 Blue Print (NEIEP 180/185) Questions with
correct answers already passed
1. What thread form is specified for the tapped holes? unified national

2. What thread series is specified? course

3. with tap drill say letter or number

4. with diameter say diameter of

5. Preference is given to the , , thread series 8-, 12-, 16-

6. The 8 thread series (8UN) is used as a substitute for one inch
the coarse thread for diameters larger than

7. The 12-thread series (12UN) is used as a 1 1/2 inches
continua- tion of the fine thread for
diameters larger than
1 11/16 inches
8. The 16-thread series (16UN) is used as a
continu- ation of the extra-fine thread for
diameters larger than
UNS (for United National
9. When design considerationas require Spe- cial Ex. .250-40 UNS
pitches that are nonstandard, the
abbreviation is used. the end of the extension or
center lines.
10. Instead of using dimension lines, the
dimension figures are placed at

11. This method is limited to datum however. dimensioning,

12. The datum surfaces on the drawing are each dimension figure
identified by: thus repre- sents its actual
distance from zero
1/
15

, Unit 9 Blue Print (NEIEP 180/185) Questions with
correct answers already passed
13. How to find full thread: 1/2 divided by 750=15 1/2=pitch, 750=depth

14. simplified




2/
15