Thread pitch of acme screw

[MrForbes]

I don't see a lead screw in the KOP checklist. Was it from a previous year?

Anyways....generally, you don't tap holes for lead screws, you use a special nut that matches the lead screw.

[Nate Laverdure]

Originally Posted by squirrel

I don't see a lead screw in the KOP checklist. Was it from a previous year?

Yes (2009), and it was also in this year's FIRST Choice. I believe 2010 and 2011's kit included the smaller (3/8") lead screw.