Which of the following is not a type of nail used in HVAC
Common
Carpentry
Roofing
Finishing
Carpentry is not a type of nail used in HVAC
What term is used to indicate nail size? And the abbreviation
Hint: coin
Penny
D. for Denarius
What tool is used to spread the ends of a staple?
Outward clinch tacker
What are hollow rivets assembled in?
A pin called a mandrel
What fastener is used to attach two pieces of sheet metal together?
Pin rivets
A tapping screw that is identified as an 8-20 x 1 Type AB, slotted hex is how long?
1 in
6-20 × 1/2 Type AB, Slotted hex has a screw number of what?
6
A machine screw that is identified as a 1/4–18 UNC-2 is how long?
What does 18 represent?
Cannot be determined from this information
Number of threads per inch
Toggle bolts are best suited for securing objects to __________.
Hollow walls
When using a toggle bolt, it is important to make certain that _________.
The object being secured is placed on the bolt before threading the toggle onto it.
Powder-actuated fastener systems are most commonly used to secure objects to
Concrete slabs and walls
You must be properly trained and licensed to use which of the following:
- solderless wiring connectors.
- threaded rod support systems.
- pin rivets.
- powder-actuated fasteners.
Powder-actuated fasteners
What is a lag shield anchor?
A two-part shield with tapered internal threads
Threaded rod can be attached to steel I-beams with _________.
Beam clamps
The pipe-hanging device that is hammered or driven into a wood support is the _______.
Pipe hook
What is perforated strapping material is used with?
With nuts and bolts to secure the piping material
How are retaining rings typically classified?
Internal or External
**Retaining rings, also referred to as snap-rings, are fasteners that hold a component either onto a shaft or inside some type of housing
The ring tongue, hook tongue, and snap terminal are all examples of ____?
Crimped-on solderless terminals
Which of the following is true regarding the use of screw terminals?
- Either solid or stranded wire can be secured under screw terminals.
- Only stranded wire should be secured under screw terminals.
- Only solid wire should be secured under screw terminals.
- Neither solid nor stranded wire should be secured under screw terminals.
Only solid wire should be secured under screw terminals.
Which of the following is true regarding cotter pins?
- They are secured in internal grooves in a shaft or channel.
- They are inserted into a shaft hole and do not need to be bent.
- They are inserted into a shaft hole and bent around to secure.
- They are secured in external grooves in a shaft.
- They are secured in external grooves in a shaft.
**answer on cengage - Cotter pins are usually inserted into a shaft hole and bent, though some varieties don't have to be bent.