BOB'S CUSTOM KNOBS FOR LARGE STANDARD SCREWS

1/4-20        (diameter 1/4 inch, thread pitch 20 turns per inch)

5/16-18      (diameter 5/16 inch, thread pitch 18 turns per inch)

3/8-16        (diameter 3/8 inch, thread pitch 16 turns per inch)

3/8-24        (diameter 3/8 inch, thread pitch 24 turns per inch)

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Last modified: 04/29/10.