Standard Hole Drill Sizes

	A	B	C	D	E	F	G	H
1	Machine Screw Drill Chart
2		Small		Water	Large		Tap
3	Screw Size	Fraction	Decimal	Jet	Fraction	Decimal	Drill	Decimal
4	#4	1/8	0.125	0.122	9/64	0.141	43	0.089
5	#6	9/64	0.141	0.148	5/32	0.156	36	0.107
6	#8	5/32	0.156	0.174	11/64	0.172	29	0.136
7	#10	13/64	0.203	0.2	7/32	0.219	25	0.15
8	1/4	17/64	0.266	0.26	9/32	0.281	7	0.201
9	5/16	21/64	0.328	0.323	11/32	0.344	I	0.272
10	3/8	25/64	0.391	0.385	13/32	0.406	Q	0.332
11	1/2	33/64	0.516	0.516	17/32	0.531	29/64	0.453
12
13	Rivet Drill Chart
14		Small *		Water	Large
15	Rivet Size	Fraction	Decimal	Jet	Fraction	Decimal
16	3/32	3/32	0.094	0.1	7/64	0.109
17	1/8	1/8	0.125	0.133	9/64	0.141
18	5/32	5/32	0.156	0.164	11/64	0.172
19	3/16	3/16	0.188	0.196	13/64	0.203
20	1/4	1/4	0.25	0.261	7/32	0.219
21
22	Threaded Insert Drill Chart
23	Insert Size	Fraction	Decimal
24	#6	13/64	0.203
25	#8	15/64	0.234
26	#10	9/32	0.281
27	1/4	23/64	0.359
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