Comparison could include identifying various types of fasteners, such as
- bolts and screws
- nuts
- anchors
- rivets
- cotter pins
- retaining rings.
Comparison could also include
- grades of bolts
- identification systems (e.g., Unified National Coarse/Unified National Fine/National Pipe Taper [UNC/UNF/NPT]).
Process/Skill Questions:
- What factors help determine which fastener to use for a specific application?
- How are fasteners classified and identified?
- How can fasteners which create friction be differentiated from those that do not?