FreeTable

Wood Screw Size			Major Thread Diameter		Thread Depth "F"		Diameter of Wood Screw at Bottom of Threads			For Hard Woods		For Soft Woods
No.	Threads per Inch	O.D.	Max.	Min.	1F	2F	Max.	Mean	Min.	Drill Size		Drill Size
2	26	.086	.090	.079	.010	.020	.070	.0645	.059	52	.0635	53	.0595
4	22	.112	.116	.105	.016	.032	.084	.0785	.073	47	.0785	49	.0730
5	20	.125	.129	.118	.018	.036	.093	.0875	.082	44	.0860	45	.0820
6	18	.1375	.142	.131	.020	.040	.102	.0965	.091	41	.0960	43	.0890
7	16	.151	.155	.144	.022	.044	.111	.1055	.100	37	.1040	39	.0995
8	15	.164	.168	.157	.023	.046	.122	.1165	.111	32	.1160	34	.1110
9	14	.177	.181	.170	.026	.052	.129	.1235	.118	31	.1200	32	.1160
10	13	.190	.194	.183	.030	.060	.134	.1285	.123	30	.1285	31	.1200
12	11	.216	.220	.209	.031	.062	.158	.1525	.147	24	.1520	26	.1470
14	10	.242	.246	.235	.035	.070	.176	.1705	.165	18	.1695	20	.1610