a. Item has external threads Go to 2 (screws) b. Item has no external threads Go to 7

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

• 3. a. Item has a flat top
• Flat head wood screw
• b. Item doesnt 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 doesnt 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 doesnt 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 doesnt have a tapered head
• Go to 12

12

• a. Item has a large flat head
• Roofing nail
• b. Item doesnt 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 its head
• Scaffold nail

14
Casing nail
15
Flathead machine screw
16
Common wire nails
17
Cap nut
18
Flathead wood screw
19
Roofing nail
20
Square nut
21
Oval head wood screw
22
Round head wood screw
23
Wing nut
24
Hex Nut
25
Oval head machine screw
26
Scaffold nail
27
Round head machine screw