Screws, nails and bolts
- Created by: Sophie :)
- Created on: 30-05-13 13:59
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- Screws, bolts and nails
- Screws
- Machine screws
- Partially straight shank
- Used with washers and nuts
- Screwdriver or Allen key used
- Woodscrews
- Require pilot holes
- Screwdriver used
- Different types of head available
- round
- countersunk
- slotted
- cross
- Self-tapping screws
- Hardened threads
- Cut own threaded holes
- Metal and hard plastics
- Machine screws
- Bolts
- Similar to machine screws
- Tightened with a spanner
- Square or hexagonal head
- Nails
- Straight shank, no thread
- Hammer
- Quicker to use than screws but not as strong
- Most are made from steel
- Threading
- A method of fastening machine screws and bolts to metal or plastic without using nuts
- 1) A hole is drilled and a tap is used to cut a female thread in the hole
- 2) a male thread is cut onto a rod using a 'split die' or lathe
- Screws
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