ANS Machine Screw Threads with Body and Tap Drill Sizes

No. or Diam. - Threads/Inch	Body Drill	Tap Drill		No. or Diam. - Threads/Inch	Body Drill	Tap Drill
0 - 80	1/16	3/64		5/16 - 18	5/16	F
1 - 72	49	53		3/8 - 24	3/8	Q
1 - 64	49	53		3/8 - 16	3/8	5/16
2 - 64	44	50		7/16 - 20	7/16	25/64
2 - 56	44	50		7/16 - 14	7/16	U
3 - 56	39	45		1/2 - 20	1/2	29/64
3 - 48	39	47		1/2 - 13	1/2	27/64
4 - 48	33	42		9/16 - 18	9/16	33/64
4 - 40	33	43		9/16 - 12	9/16	31/64
5 - 44	1/8	37		5/8 - 18	5/8	37/64
5 - 40	1/8	38		5/8 - 11	5/8	17/32
6 - 40	28	33		3/4 - 16	3/4	11/16
6 - 32	28	36		3/4 - 10	3/4	21/32
8 - 36	19	29		7/8 - 14	7/8	13/16
8 - 32	19	29		7/8 - 9	7/8	49/64
10 - 32	11	21		1 - 14	1	15/16
10 - 24	11	25		1 - 8	1	7/8
12 - 28	7/32	14		1 1/8 - 12	1 1/8	1 3/64
12 - 24	7/32	16		1 1/8 - 7	1 1/8	63/64
1/4 - 28	1/4	3		1 1/4 - 12	1 1/4	1 11/64
1/4 - 20	1/4	7		1 1/4 - 7	1 1/4	1 7/64
5/16 - 24	5/16	I