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EN 24017 – 1991 – Bu lông lục giác

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Mô tả

EN 24017 – 1991 – Bu lông lục giác

Screw Thread			M1.6	M2	M2.5	M3	(M3.5)	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20
P	Pitch		0.35	0.4	0.45	0.5	0.6	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5
a	max		1.05	1.2	1.35	1.5	1.8	2.1	2.4	3	4	4.5	5.3	6	6	7.5	7.5
a	min		0.35	0.4	0.45	0.5	0.6	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5
c	min		0.1	0.1	0.1	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.2	0.2	0.2
c	max		0.25	0.25	0.25	0.4	0.4	0.4	0.5	0.5	0.6	0.6	0.6	0.6	0.8	0.8	0.8
d_a	max		2	2.6	3.1	3.6	4.1	4.7	5.7	6.8	9.2	11.2	13.7	15.7	17.7	20.2	22.4
d_w	Grade A	min	2.27	3.07	4.07	4.57	5.07	6.03	6.88	8.88	11.63	14.63	16.63	19.37	22.49	25.34	28.19
d_w	Grade B	min	–	–	–	–	–	–	–	–	–	–	–	–	22	24.85	27.7
e	Grade A	min	3.41	4.32	5.45	6.01	6.58	7.66	8.79	11.05	14.38	17.77	20.03	23.36	26.75	30.14	33.53
e	Grade B	min	–	–	–	–	–	–	–	–	–	–	–	–	26.17	29.56	32.95
k	Nominal Size		1.1	1.4	1.7	2	2.4	2.8	3.5	4	5.3	6.4	7.5	8.8	10	11.5	12.5
	Grade A	min	0.975	1.275	1.575	1.875	2.275	2.675	3.35	3.85	5.15	6.22	7.32	8.62	9.82	11.285	12.285
	Grade A	max	1.225	1.525	1.825	2.125	2.525	2.925	3.65	4.15	5.45	6.58	7.68	8.98	10.18	11.715	12.715
	Grade B	min	–	–	–	–	–	–	–	–	–	–	–	–	9.71	11.15	12.15
	Grade B	max	–	–	–	–	–	–	–	–	–	–	–	–	10.29	11.85	12.85
k₁	Grade A	min	0.68	0.89	1.1	1.31	1.59	1.87	2.35	2.7	3.61	4.35	5.12	6.03	6.87	7.9	8.6
k₁	Grade B	min	–	–	–	–	–	–	–	–	–	–	–	–	6.8	7.81	8.51
r	min		0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.25	0.4	0.4	0.6	0.6	0.6	0.6	0.8
s	max=nominal size		3.2	4	5	5.5	6	7	8	10	13	16	18	21	24	27	30
	Grade A	min	3.02	3.82	4.82	5.32	5.82	6.78	7.78	9.78	12.73	15.73	17.73	20.67	23.67	26.67	29.67
	Grade B	min	–	–	–	–	–	–	–	–	–	–	–	–	23.16	26.16	29.16

Screw Thread			(M22)	M24	(M27)	M30	(M33)	M36	(M39)	M42	(M45)	M48	(M52)	M56	(M60)	M64
P	Pitch		2.5	3	3	3.5	3.5	4	4	4.5	4.5	5	5	5.5	5.5	6
a	max		7.5	9	9	10.5	10.5	12	12	13.5	13.5	15	15	16.5	16.5	18
a	min		2.5	3	3	3.5	3.5	4	4	4.5	4.5	5	5	5.5	5.5	6
c	min		0.2	0.2	0.2	0.2	0.2	0.2	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
c	max		0.8	0.8	0.8	0.8	0.8	0.8	1	1	1	1	1	1	1	1
d_a	max		24.4	26.4	30.4	33.4	36.4	39.4	42.4	45.6	48.6	52.6	56.6	63	67	71
d_w	Grade A	min	31.71	33.61	–	–	–	–	–	–	–	–	–	–	–	–
d_w	Grade B	min	31.35	33.25	38	42.75	46.55	51.11	55.86	59.95	64.7	69.45	74.2	78.66	83.41	88.16
e	Grade A	min	37.72	39.98	–	–	–	–	–	–	–	–	–	–	–	–
e	Grade B	min	37.29	39.55	45.2	50.85	55.37	60.79	66.44	71.3	76.95	82.6	88.25	93.56	99.21	104.86
k	Nominal Size		14	15	17	18.7	21	22.5	25	26	28	30	33	35	38	40
	Grade A	min	13.785	14.785	–	–	–	–	–	–	–	–	–	–	–	–
	Grade A	max	14.215	15.215	–	–	–	–	–	–	–	–	–	–	–	–
	Grade B	min	13.65	14.65	16.65	18.28	20.58	22.08	24.58	25.58	27.58	29.58	32.5	34.5	37.5	39.5
	Grade B	max	14.35	15.35	17.35	19.12	21.42	22.92	25.42	26.42	28.42	30.42	33.5	35.5	38.5	40.5
k₁	Grade A	min	9.65	10.35	–	–	–	–	–	–	–	–	–	–	–	–
k₁	Grade B	min	9.56	10.26	11.66	12.8	14.41	15.46	17.21	17.91	19.31	20.71	22.75	24.15	26.25	27.65
r	min		0.8	0.8	1	1	1	1	1	1.2	1.2	1.6	1.6	2	2	2
s	max=nominal size		34	36	41	46	50	55	60	65	70	75	80	85	90	95
	Grade A	min	33.38	35.38	–	–	–	–	–	–	–	–	–	–	–	–
	Grade B	min	33	35	40	45	49	53.8	58.8	63.1	68.1	73.1	78.1	82.8	87.8	92.8

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