MODEL ENGINEER[M.E.]

SIZE	TAP DRILL	CLEARANCE DRILL
1/8-40	37	30
5/32-40	30	21
3/16-40	20	11
7/32-40	10	2
1/4-40	1	F
1/4-32	2	F
9/32-32	K	O
3/8-32	S	W
7/16-32	13/32	29/64
1/2-32	15/32	33/64

MODEL TAPER PIPE[M.T.P]

SIZE	TAP DRILL
1/8-56	40
5/32-48	30
3/16-40	23
1/4-40	5
5/16-27	F