Coarse Thread Series, UNC

Basic Sizes

1	2	3	4	5	6
Designation	Pitch (inches)	Major Diameter	Effective Diameter	Minor Diameter
		Nut and Bolt (inches)	Nut and Bolt (inches)	Nut (inches)	Bolt (inches)
	0.05000	0.2500	0.2175	0.1959	0.1887
	0.05556	0.3125	0.2764	0.2524	0.2443
	0.06250	0.3750	0.3344	0.3073	0.2983
	0.07143	0.4375	0.3911	0.3602	0.3499
	0.07692	0.5000	0.4500	0.4167	0.4056
	0.08333	0.5625	0.5084	0.4723	0.4603
	0.09091	0.6250	0.5660	0.5266	0.5135
	0.10000	0.7500	0.6850	0.6417	0.6273
	0.11111	0.8750	0.8028	0.7547	0.7387
	0.12500	1.0000	0.9188	0.8647	0.8466
	0.14286	1.1250	1.0322	0.9704	0.9497
	0.14286	1.2500	1.1572	1.0954	1.0747
	0.16667	1.3750	1.2667	1.1946	1.1705
	0.16667	1.5000	1.3917	1.3196	1.2955
	0.20000	1.7500	1.6201	1.5335	1.5046
	0.22222	2.0000	1.8557	1.7594	1.7274
	0.22222	2.2500	2.1057	0.0094	1.9774
	0.25000	2.5000	2.3376	2.2294	2.1933
	0.25000	2.7500	2.5876	3.4794	2.4433
	0.25000	3.0000	2.8376	2.7294	2.6933
	0.25000	3.2500	3.0876	2.9794	2.9433
	0.25000	3.5000	3.3376	3.2294	3.1933
	0.25000	3.7500	3.5876	3.4794	3.4433
	0.25000	4.0000	3.8376	3.7294	3.6933

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