common plumbing processes part 4

Henry is choosing screws for his project. The purpose of having different screw styles in the building trade is to (a)  

• To reduce costs

• To match aesthetic preferences

• To suit different applications

• To increase weight

Which screw style is characterized by a rounded top and a slotted drive?

• Pan

• Cheese

• Raised-Countersunk

• Slotted-Hexagon

The screw head type designed for use with slotted screws is _____

The screw head type that is similar to the Phillips head but has an eight-pointed star shape is _____

What is another name for the Star head screw?

• Allen key

• Torx screwdrivers

• Phillips head

• Pozidriv head

Which of the following materials is commonly used for fixings and components?

• Wood

• Brass

• Plastic

• Rubber

Which material is NOT listed as a fixing material in the image?

• Stainless steel

• Steel

• Copper

• Chrome

Which material is best suited for high moisture areas and is corrosion resistant?

• Zinc

• Chrome

• Brass

• Sheradised

Which material is described as having a decorative finish and is used in exposed bathroom cleaning?

• Brass

• Chrome

• Zinc

• Steel

Which material is noted for being cheap and having a good lifespan, suitable for general purpose inside use in dry conditions?

• Stainless steel

• Brass

• Steel

• Sheradised