Fasteners

1. _____ is the top edge of two adjoining threads.
4. A _____ is a tool used to cut threads inside a hole.
5. _____ diameter is the smallest measurement from the inside edges of the threads.
7. A _____ is a tool used to cut threads around the outside of a piece of metal, such as a bolt, rod, or pipe.
9. A screw _____ is a helical ridge of uniform section formed inside a hole (such as a nut) or on the outside of a fastener (such as a screw or bolt).
11. _____ bolts are special expanding metal fasteners used to anchor relatively light objects to hollow walls.
13. A _____ bolt is used to fasten fairly heavy objects to a hollow wall.
14. _____ fasten parts securely while, at the same time, allowing the parts to be readily removed.

2. American National _____ Thread has three major series of threads: National Fine (NF), National Coarse (NC) and National Pipe (NP).
3. American National _____ Thread has a 29 Degree angle and is used for feed screws, jacks, and vises.
6. _____ is the bottom area of two adjoining threads.
8. _____ diameter is the widest measurement from the outside edges of the threads.
10. _____ are the threaded grooves of a tap.
12. A _____ is generally defined as a fastener that is used with a nut and is tightened by turning the nut.