Plumbing Processes PPT 4 - Fixings

What material are masonry nails typically made of?

• Copper

• Hardened zinc

• Steel

• Aluminum

What is the primary use of copper nails in plumbing?

• Fixing masonry

• Rough joinery work

• Fixing sheet lead

• Decorative purposes

Why are copper nails used by plumbers?

• To enhance appearance

• To prevent corrosion

• For their strength

• For their low cost

How are screws ordered according to the application?

• By color and material

• By gauge and length

• By weight and diameter

• By brand and price

Which material is often used for screws that have a shiny, decorative finish?

• Sherardised

• Zinc

• Chrome

• Stainless Steel

What type of screw is used for general work and has a head that sinks flush or a little below the wood surface?

• Pozidriv

• Round head

• Countersunk

• Flat head

Which screw type is very similar in appearance to the countersunk screw but requires a crosshead screwdriver?

• Round head

• Pozidriv

• Flat head

• Hex head

What is the primary use of a round head screw?

• Fixing copper saddle clips

• Holding floorboards

• Securing pipe clips

• Attaching trunking

Which type of screw head is designed to intentionally 'ride out' of the screw head to prevent over-tightening?

• Flat blade

• Phillips head

• Pozidriv head

• Star head

Which screw head is mainly used in the gas industry for appliance servicing and installation?

• Star head

• Pozidriv head

• Hexagon head

• Flat blade