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Preset Tool Size Chart
Tube Size	Dash #	Part Number	Thread Size
.125"	-2	NAFPT-2	.3125-24
.187"	-3	NAFPT-3	.3750-24
.250"	-4	NAFPT-4	.4375-20
.312"	-5	NAFPT-5	.5000-20
.375"	-6	NAFPT-6	.5625-18
.500"	-8	NAFPT-8	.7500-16
.625"	-10	NAFPT-10	.8750-14
.750"	-12	NAFPT-12	1.0625-12
1.00"	-16	NAFPT-16	1.3125-12
1.25"	-20	NAFPT-20	1.6250-12
1.50"	-24	NAFPT-24	1.8750-12

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