Fastener Information

Wood Screw Diameters

Size Number	Major Thread Diameter*
Size Number	Decimal	Nearest Fractional Measurement
0	.060	1/16
1	.073	5/64
2	.086	3/32
3	.099	7/64
4	.112	7/64
5	.125	1/8
6	.138	9/64
7	.151	5/32
8	.164	5/32
9	.177	11/64
10	.190	3/16
11	.203	13/64
12	.216	7/32
14	.242	1/4
16	.268	17/64
18	.294	19/64
20	.320	5/16
* Major thread diameter is measured on the outside of the threads. For more information about how to measure diameter see our Measuring Fastener Diameter page.

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