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.