1. a. Item has external threads Go to 2 (screws)

b. Item has no external threadsGo to 7

2. a. Item has a pointy tip

Go to 3

b. Item does not have a pointy tip

Go to 5

3. a. Item has a flat top

Flat head wood screw

b. Item doesn’t have a flat top

Go to 4

4. a. Item has an oval head

Oval head wood screw

b. Item has a round head

Round head wood screw

5. a. Item has a flat head

Flat head machine screw

b. Item doesn’t have a flat head

Go to 6

6. a. Item has an oval head

Oval head machine screw

b. Item has a round head

Round head machine screw

7. a. Item has internal threads

Go to 8 (nuts)

b. Item has no internal threads

Go to 11 (nails)

8. a. Item has wings

Wing nut

b. Item has no wings

Go to 9

9. a. Item has a cap

Cap nut

b. Item doesn’t have a cap

Go to 10

10. a. Looking down on the hole item is 4 sided

Square nut

b. Looking down on the hole item is six sided

Hex nut

11. a. Item has a tapered head

Casing nail

b. Item doesn’t have a tapered head

Go to 12

12. a. Item has a large flat head

Roofing nail

b. Item doesn’t have a large flat head

Go to 13

13. a. Item has a small flat head

Common wire nail

b. Item has a disc below it’s head

Scaffold nail

Casing nail

Flathead machine screw

Common wire nails

Cap nut

Flathead wood screw

Roofing nail

Square nut

Oval head wood screw

Round head wood screw

Wing nut

Hex Nut

Oval head machine screw

Scaffold nail

Round head machine screw