Wood Screw Diameters

Size	Major Thread Diameter*
Size	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.