Farmall MD nut
Member
I was goin thru some of my charts, and figured some of you can use this info on drill sizes for taps.
Thread-------Drill________Thread------------Drill
0-80---------3/64__________1/4-20-------------7
1-64---------53____________1/4-28-------------3
1-72---------53____________5/16-18------------F
2-56---------51____________5/16-24------------I
2-64---------50____________3/8-16------------5/16
3-48---------5/64__________3/8-24-------------Q
3-56---------46____________7/16-14------------U
4-40---------43____________7/16-20------------W
4-48---------42____________1/2-12-----------27/64
5-40---------39____________1/2-13-----------27/64
5-44---------37____________1/2-20-----------29/64
6-32---------36____________9/16-12----------31/64
6-40---------33____________9/16-18----------33/64
8-32---------29____________5/8-11-----------17/32
8-36---------29____________5/8-18-----------37/64
10-24--------25____________3/4-10-----------21/32
10-32--------21____________3/4-16-----------11/16
12-24--------17____________7/8-9------------49/64
12-28--------15____________7/8-14-----------13/16
1-8--------------7/8
1-12------------59/64
1-14 15/16