Tamaño de roscado recomendado y orificios libres de Unified Threads

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Tamaños recomendados de taladro roscador y orificios de paso de Unified Thread

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Utilice estas tablas para calcular el tamaño de broca y el orificio de paso relevantes para roscas unificadas.

Todas las dimensiones están en milímetros (mm).

Tamaño del tornillo		No. de hilos por pulgada	Diámetro menor	Taladros				Taladros para orificios de paso: todos los materiales
				Rosca Aluminio, Latón y Plásticos 75%		Acero Inoxidable, Aceros y Hierro Rosca 50%		Ajuste ceñido		Ajuste libre
No. o Diámetro	Diámetro mayor			Tamaño de taladro	Equivalente decimal	Tamaño de taladro	Equivalente decimal	Tamaño de taladro	Equivalente decimal	Tamaño de taladro	Equivalente decimal
0	0.06	80	0.0447	3/64	0.0469	55	0.052	52	0.0635	50	0.07
1	0.073	64	0.0538	53	0.0595	1/16	0.0625	48	0.076	46	0.081
1	0.073	72	0.056	53	0.0595	52	0.0635	48	0.076	46	0.081
2	0.086	56	0.0641	50	0.07	49	0.073	43	0.089	41	0.096
2	0.086	64	0.0668	50	0.07	48	0.076	43	0.089	41	0.096
3	0.099	48	0.0734	47	0.0785	44	0.086	37	0.104	35	0.11
3	0.099	56	0.0771	45	0.082	43	0.089	37	0.104	35	0.11
4	0.112	40	0.0813	43	0.089	41	0.096	32	0.116	30	0.1285
4	0.112	48	0.0864	42	0.0935	40	0.098	32	0.116	30	0.1285
5	0.125	40	0.0943	38	0.1015	7/64	0.1094	30	0.1285	29	0.136
5	0.125	44	0.0971	37	0.104	35	0.11	30	0.1285	29	0.136
6	0.138	32	0.0997	36	0.1065	32	0.116	27	0.144	25	0.1495
8	0.164	32	0.1257	29	0.136	27	0.144	18	0.1695	16	0.177
8	0.164	36	0.1299	29	0.136	26	0.147	18	0.1695	16	0.177
10	0.19	24	0.1389	25	0.1495	20	0.161	9	0.196	7	0.201
10	0.19	32	0.1517	21	0.159	18	0.1695	9	0.196	7	0.201
12	0.216	24	0.1649	16	0.177	12	0.189	2	0.221	1	0.228
		28	0.1722	14	0.182	10	0.1935
		32	0.1777	13	0.185	9	0.196
1/4	0.25	20	0.1887	7	0.201	7/32	0.2188	F	0.257	H	0.266
		28	0.2062	3	0.213	1	0.228
		32	0.2117	7/32	0.2188	1	0.228
5/16	0.3125	18	0.2443	F	0.257	j	0.277	PAGS	0.323	q	0.332
		24	0.2614	yo	0.272	9/32	0.2812
		32	0.2742	9/32	0.2812	L	0.29
3/8	0.375	16	0.2983	5/16	0.3125	q	0.332	W.	0.386	X	0.397
		24	0.3239	q	0.332	S	0.348
		32	0.3367	11/32	0.3438	T	0.358
7/16	0.4375	14	0.3499	Ud.	0.368	25/64	0.3906	29/64	0.4531	15/32	0.4687
		20	0.3762	25/64	0.3906	13/32	0.4062
		28	0.3937	Y	0.404	z	0.413
1/2	0.5	13	0.4056	27/64	0.4219	29/64	0.4531	33/64	0.5156	17/32	0.5312
		20	0.4387	29/64	0.4531	15/32	0.4688
		28	0.4562	15/32	0.4688	15/32	0.4688
9/16	0.5625	12	0.4603	31/64	0.4844	33/64	0.5156	37/64	0.5781	19/32	0.5938
		18	0.4943	33/64	0.5156	17/32	0.5312
		24	0.5114	33/64	0.5156	17/32	0.5312
5/8	0.625	11	0.5135	17/32	0.5312	9/16	0.5625	41/64	0.6406	21/32	0.6562
		18	0.5568	37/64	0.5781	19/32	0.5938
		24	0.5739	37/64	0.5781	19/32	0.5938
11/16	0.6875	24	0.6364	41/64	0.6406	21/32	0.6562	45/64	0.7031	23/32	0.6562
3/4	0.75	10	0.6273	21/32	0.6562	11/16	0.6875	49/64	0.7656	25/32	0.7812
		16	0.6733	11/16	0.6875	45/64	0.7031
		20	0.6887	45/64	0.7031	23/32	0.7188
13/16	0.8125	20	0.7512	49/64	0.7656	25/32	0.7812	53/64	0.8281	27/32	0.8438
7/8	0.875	9	0.7387	49/64	0.7656	51/64	0.7969	57/64	0.8906	29/32	0.9062
		14	0.7874	13/16	0.8125	53/64	0.8281
		20	0.8137	53/64	0.8281	27/32	0.8438
15/16	0.9375	20	0.8762	57/64	0.8906	29/32	0.9062	61/64	0.9531	31/32	0.9688
1	1	8	0.8466	7/8	0.875	59/64	0.9219	1-1/64	1.0156	1-1/32	1.0313
		12	0.8978	15/16	0.9375	61/64	0.9531
		20	0.9387	61/64	0.9531	31/32	0.9688
1-1/16	1.0625	18	0.9943	1	1	1-1/64	1.0156	1-5/64	1.0781	1-3/32	1.0938
1-1/8	1.125	7	0.9497	63/64	0.9844	1-1/32	1.0313	1-9/64	1.1406	1-5/32	1.1562
		12	1.0228	1-3/64	1.0469	1-5/64	1.0781
		18	1.0568	1-1/16	1.0625	1-5/64	1.0781
1-3/16	1.1875	18	1.1193	1-1/8	1.125	1-9/64	1.1406	1-13/64	1.2031	1-7/32	1.2188
1-1/4	1.25	7	1.0747	1-7/64	1.1094	1-5/32	1.1562	1-17/64	1.2656	1-9/32	1.2812
		12	1.1478	1-11/64	1.1719	1-13/64	1.2031
		18	1.1818	1-3/16	1.1875	1-13/64	1.2031
1-5/16	1.3125	18	1.2443	1-1/4	1.25	1-17/64	1.2656	1-21/64	1.3281	1-11/32	1.3438
1-3/8	1.375	6	1.1705	1-7/32	1.2187	1-17/64	1.2656	1-25/64	1.3906	1-13/32	1.4062
		12	1.2728	1-19/64	1.2969	1-21/64	1.3281
		18	1.3068	1-5/16	1.3125	1-21/64	1.3281
1-7/16	1.4375	18	1.3693	1-3/8	1.375	1-25/64	1.3906	1-29/64	1.4531	1-15/32	1.4688
1-1/2	1.5	6	1.2955	1-11/32	1.3437	1-25/64	1.3906	1-33/64	1.5156	1-17/32	1.5312
		12	1.3978	1-27/64	1.4219	1-7/16	1.4375
		18	1.4318	1-7/16	1.4375	1-29/64	1.4531
1-9/16	1.5625	18	1.4943	1-12	1.5	1-33/64	1.5156	1-37/64	1.5781	1-19/32	1.5938
1-5/8	1.625	18	1.5568	1-9/16	1.5625	1-37/64	1.5781	1-41/64	1.6406	1-21/32	1.6562
1-11/16	1.6875	18	1.6193	1-5/8	1.625	1-41/64	1.6406	1-45/64	1.7031	1-23/32	1.7188
1-3/4	1.75	5	1.5046	1-9/16	1.5625	1-5/8	1.625	1-49/64	1.7659	1-25/32	1.7812

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Tamaños recomendados de taladro roscador y orificios de paso de Unified Thread

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