Standard ASME B18.2.1 TABLE 1

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - Square Head Bolts Table 1
Publication date: 2010
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H basic	E min	b (l< 6')	b (l> 6')	F basic	G basic
1/4	20	28	11/64	0.237	0.75	1	3/8	0.498
5/16	18	24	13/64	0.298	0.875	1.125	1/2	0.665
3/8	16	24	1/4	0.360	1	1.25	9/16	0.747
7/16	14	20	18/64	0.421	1.125	1.375	5/8	0.828
1/2	13	20	21/64	0.482	1.25	1.5	3/4	0.995
5/8	11	18	27/64	0.605	1.5	1.75	15/16	1.244
3/4	10	16	1/2	0.729	1.75	2	1 1/8	1.494
7/8	9	14	19/32	0.852	2	2.25	1 5/16	1.742
1	8	12	21/32	0.976	2.25	2.5	1 1/2	1.991
1 1/8	7	12	3/4	1.098	2.25	2.75	1 11/16	2.239
1 1/4	7	12	27/32	1.223	2.75	3	1 7/8	2.489
1 3/8	6	12	29/32	1.345	3	3.25	2 1/16	2.738
1 1/2	6	12	1	1.470	3.25	3.5	2 1/4	2.986


Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - Askew Head Bolts Table 6
Publication date: 2010
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H1 min	H ref	E min	LT (l< 6')	LT (l> 6')	G min	F basic
3/8	16	24	0.277	0.25	0.36	1	1.25	0.747	0.563
1/2	13	20	0.371	0.328	0.482	1.25	1.5	0.995	0.75
5/8	11	18	0.480	0.422	0.605	1.5	1.75	1.244	0.938
3/4	10	16	0.574	0.5	0.729	1.75	2	1.494	1.125
7/8	9	14	0.683	0.594	0.852	2	2.25	1.742	1.313
1	8	12	0.761	0.656	0.976	2.25	2.5	1.991	1.5

Standard ASME B18.2.1 TABLE 4

Sruby z lbem skosnym

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - Askew Head Bolts Table 6
Publication date: 2010
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H1 min	H ref	E min	LT (l< 6')	LT (l> 6')	G min	F basic
3/8	16	24	0.277	0.25	0.36	1	1.25	0.747	0.563
1/2	13	20	0.371	0.328	0.482	1.25	1.5	0.995	0.75
5/8	11	18	0.480	0.422	0.605	1.5	1.75	1.244	0.938
3/4	10	16	0.574	0.5	0.729	1.75	2	1.494	1.125
7/8	9	14	0.683	0.594	0.852	2	2.25	1.742	1.313
1	8	12	0.761	0.656	0.976	2.25	2.5	1.991	1.5

Sruby z lbem kwadratowym, seria calowa

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - Square Head Bolts Table 1
Publication date: 2010
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H basic	E min	b (l< 6')	b (l> 6')	F basic	G basic
1/4	20	28	11/64	0.237	0.75	1	3/8	0.498
5/16	18	24	13/64	0.298	0.875	1.125	1/2	0.665
3/8	16	24	1/4	0.360	1	1.25	9/16	0.747
7/16	14	20	18/64	0.421	1.125	1.375	5/8	0.828
1/2	13	20	21/64	0.482	1.25	1.5	3/4	0.995
5/8	11	18	27/64	0.605	1.5	1.75	15/16	1.244
3/4	10	16	1/2	0.729	1.75	2	1 1/8	1.494
7/8	9	14	19/32	0.852	2	2.25	1 5/16	1.742
1	8	12	21/32	0.976	2.25	2.5	1 1/2	1.991
1 1/8	7	12	3/4	1.098	2.25	2.75	1 11/16	2.239
1 1/4	7	12	27/32	1.223	2.75	3	1 7/8	2.489
1 3/8	6	12	29/32	1.345	3	3.25	2 1/16	2.738
1 1/2	6	12	1	1.470	3.25	3.5	2 1/4	2.986


Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 - Askew Head Bolts Table 6
Publication date: 2010
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H1 min	H ref	E min	LT (l< 6')	LT (l> 6')	G min	F basic
3/8	16	24	0.277	0.25	0.36	1	1.25	0.747	0.563
1/2	13	20	0.371	0.328	0.482	1.25	1.5	0.995	0.75
5/8	11	18	0.480	0.422	0.605	1.5	1.75	1.244	0.938
3/4	10	16	0.574	0.5	0.729	1.75	2	1.494	1.125
7/8	9	14	0.683	0.594	0.852	2	2.25	1.742	1.313
1	8	12	0.761	0.656	0.976	2.25	2.5	1.991	1.5

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