What is the spider legs seven parts?

7 parts- well, I haven't seen it limited to *7* parts, but here goes:

1) Bridge (the initial line)

2) Frame Threads

3) Radius Threads

4) Auxiliary Spiral

5) Capture Spiral (the sticky silk)

6) Signal Line

7) U-Turn (Where the Auxiliary Spiral turns into the Capture Spiral)

8) Anchor Point

9) Anchor Thread

I think your question was SUPPOSED to be: What are the 7 types of silk a spider can produce? To which the answer is:

1) Swathing Silk

2) Webs

3) Drag lines

4) Parachuting or ballooning silk

5) Shelter

6) Egg-sacs

7) Mating (sperm webs produced by males)