Inch Thread Pitch Chart

Name: pankaj international
Address: doburji, Ludhiana, 141421, IN
Telephone: +918264677877

Coarse Thread Series - UNC				Fine Thread Series - UNF				8-Thread Series - 8UN
Nominal Size & TPI	Basic Pitch Dia. (in.)	Section at Minor Dia. (sq in.)	Tensile Stress Area (sq in.)	Nominal Size & TPI	Basic Pitch Dia. (in.)	Section at Minor Dia. (sq in.)	Tensile Stress Area (sq in.)	Nominal Size & TPI	Basic Pitch Dia. (in.)	Section at Minor Dia. (sq in.)	Tensile Stress Area (sq in.)
3/8" - 16	0.3344	0.0678	0.0775	3/8" - 24	0.3479	0.0809	0.0878	--	--	--	--
7/16" - 14	0.3911	0.0933	0.1063	7/16" - 20	0.4050	0.1090	0.1187	--	--	--	--
1/2" - 13	0.4500	0.1257	0.1419	1/2" - 20	0.4675	0.1486	0.1599	--	--	--	--
9/16" - 12	0.5084	0.162	0.182	9/16" - 18	0.5264	0.189	0.203	--	--	--	--
5/8" - 11	0.5660	0.202	0.226	5/8" - 18	0.5889	0.240	0.256	--	--	--	--
3/4" - 10	0.6850	0.302	0.334	3/4" - 16	0.7094	0.351	0.373	--	--	--	--
7/8" - 9	0.8028	0.419	0.462	7/8" - 14	0.8286	0.480	0.509	--	--	--	--
1 - 8	0.9188	0.551	0.606	1 - 12	0.9459	0.625	0.663	1 - 8	0.9188	0.551	0.606
1 1/8" - 7	1.0322	0.693	0.763	1 1/8" - 12	1.0709	0.812	0.856	1 1/8" - 8	1.0438	0.728	0.790
1 1/4" - 7	1.1572	0.890	0.969	1 1/4" - 12	1.1959	1.024	1.073	1 1/4" - 8	1.1688	0.929	1.000
1 3/8" - 6	1.2667	1.054	1.155	1 3/8" - 12	1.3209	1.260	1.315	1 3/8" - 8	1.2938	1.155	1.233
1 1/2" - 6	1.3917	1.294	1.405	1 1/2" - 12	1.4459	1.521	1.581	1 1/2" - 8	1.4188	1.405	1.492
--	--	--	--	--	--	--	--	1 5/8" - 8	1.5438	1.68	1.78
1 3/4" - 5	1.6201	1.74	1.90	--	--	--	--	1 3/4" - 8	1.6688	1.98	2.08
--	--	--	--	--	--	--	--	1 7/8" - 8	1.7938	2.30	2.41
2 - 4 1/2	1.8557	2.30	2.50	--	--	--	--	2 - 8	1.9188	2.65	2.77
2 1/4" - 4 1/2	2.1057	3.02	3.25	--	--	--	--	2 1/4" - 8	2.1688	3.42	3.56
2 1/2" - 4	2.3376	3.72	4.00	--	--	--	--	2 1/2" - 8	2.4188	4.29	4.44
2 3/4" - 4	2.5876	4.62	4.93	--	--	--	--	2 3/4" - 8	2.6688	5.26	5.43
3 - 4	2.8376	5.62	5.97	--	--	--	--	3 - 8	2.9188	6.32	6.51