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Screws and nails
Fittings
Question | Answer |
---|---|
Screws | Available in a range of different shapes and sizes to meet different needs. Wood screws are tapered but machine screws have parallel edges. |
Name the different type of screw heads | 1. Round head 2. flat head 3. raised head |
Describe what the round head screw is used for | fixing materials together. Countersunk holes are not used. Nice if made out of Brass. |
Describe what the flat head screw is used for | For general wood working. E.g. hinges on doors. Tightened flush to material. First a countersunk hole + pilot hole is drilled through the materials. |
What are the different types of slots? | 1. Slotted 2. Pozi drive 3. Phillips |
Self tapping screws | Self tapping screws (i.e that need no pilot hole) have a screw thread that runs into the head. |
Nails | Available in a huge range of sizes and with different shapes of head and pin. |
Panel Pins | Small and easy to hammer in. |
Dovetail nailing | Increases strength because the nails are hammered in a dovetail joint style shape way. |
Oval nails | Are for larger jobs. |
Clout nails | They have a large flat head and are galvenised. |