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EN 28765 – 1992 – Bu lông lục giác

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Mô tả

EN 28765 – 1992 – Bu lông lục giác

Screw Thread			M8	M10	M10	M12	M12	M14	M16	M18	M20	M20	M22
P	Pitch		1	1	1.25	1.5	1.25	1.5	1.5	1.5	1.5	2	1.5
b	L≤125		22	26	26	30	30	34	38	42	46	46	50
	125＜L≤200		–	–	–	–	–	40	44	48	52	52	56
	L＞200		–	–	–	–	–	–	–	–	–	–	69
c	max		0.15	0.15	0.15	0.15	0.15	0.15	0.2	0.2	0.2	0.2	0.2
c	min		0.6	0.6	0.6	0.6	0.6	0.6	0.8	0.8	0.8	0.8	0.8
d_a	max		9.2	11.2	11.2	13.7	13.7	15.7	17.7	20.2	22.4	22.4	24.4
d_s	max=nominal size		8	10	10	12	12	14	16	18	20	20	22
	Grade A	min	7.78	9.78	9.78	11.73	11.73	13.73	15.73	17.73	19.67	19.67	21.67
	Grade B	min	–	–	–	–	–	–	15.57	17.57	19.48	19.48	21.48
d_w	Grade A	min	11.63	14.63	14.63	16.63	16.63	19.37	22.49	25.34	28.19	28.19	31.71
d_w	Grade B	min	–	–	–	–	–	–	22	24.85	27.7	27.7	31.35
e	Grade A	min	14.38	17.77	17.77	20.03	20.03	23.36	26.75	30.14	33.53	33.53	37.72
e	Grade B	min	–	–	–	–	–	–	26.17	29.56	32.95	32.95	37.29
L₁	max		2	2	2	3	3	3	3	3	4	4	4
k	Nominal Size		5.3	6.4	6.4	7.5	7.5	8.8	10	11.5	12.5	12.5	14
	Grade A	max	5.15	6.22	6.22	7.32	7.32	8.62	9.82	11.285	12.285	12.285	13.785
	Grade A	min	5.45	6.58	6.58	7.68	7.68	8.98	10.18	11.715	12.715	12.715	14.215
	Grade B	max	–	–	–	–	–	–	9.71	11.15	12.15	12.15	13.65
	Grade B	min	–	–	–	–	–	–	10.29	11.85	12.85	12.85	14.35
k₁	Grade A	min	3.61	4.35	4.35	5.12	5.12	6.03	6.87	7.9	8.6	8.6	9.65
k₁	Grade B	min	–	–	–	–	–	–	6.8	7.81	8.51	8.51	9.56
r	min		0.4	0.4	0.4	0.6	0.6	0.6	0.6	0.6	0.8	0.8	0.8
s	max=nominal size		13	16	16	18	18	21	24	27	30	30	34
	Grade A	min	12.73	15.73	15.73	17.73	17.73	20.67	23.67	26.67	29.67	29.67	33.38
	Grade B	min	–	–	–	–	–	–	23.16	26.16	29.16	29.16	33
Length of Thread b			–	–	–	–	–	–	–	–	–	–	–

Screw Thread			M27	M30	M33	M36	M39	M42	M45	M48	M52	M56	M60
P	Pitch		2	2	2	3	3	3	3	3	4	4	4
b	L≤125		60	66	–	–	–	–	–	–	–	–	–
	125＜L≤200		66	72	78	84	90	96	102	108	116	–	–
	L＞200		79	85	91	97	103	109	115	121	129	137	145
c	max		0.2	0.2	0.2	0.2	0.3	0.3	0.3	0.3	0.3	0.3	0.3
c	min		0.8	0.8	0.8	0.8	1	1	1	1	1	1	1
d_a	max		30.4	33.4	36.4	39.4	42.4	45.6	48.6	52.6	56.6	63	67
d_s	max=nominal size		27	30	33	36	39	42	45	48	52	56	60
	Grade A	min	–	–	–	–	–	–	–	–	–	–	–
	Grade B	min	26.48	29.48	32.38	35.38	38.38	41.38	44.38	47.38	51.26	55.26	59.26
d_w	Grade A	min	–	–	–	–	–	–	–	–	–	–	–
d_w	Grade B	min	38	42.75	46.55	51.11	55.86	59.95	64.7	69.45	74.2	78.66	83.41
e	Grade A	min	–	–	–	–	–	–	–	–	–	–	–
e	Grade B	min	45.2	50.85	55.37	60.79	66.44	71.3	76.95	82.6	88.25	93.56	99.21
L₁	max		6	6	6	6	6	8	8	10	10	12	12
k	Nominal Size		17	18.7	21	22.5	25	26	28	30	33	35	38
	Grade A	max	–	–	–	–	–	–	–	–	–	–	–
	Grade A	min	–	–	–	–	–	–	–	–	–	–	–
	Grade B	max	16.65	18.28	20.58	22.08	24.58	25.58	27.58	29.58	32.5	34.5	37.5
	Grade B	min	17.35	19.12	21.42	22.92	25.42	26.42	28.42	30.42	33.5	35.5	38.5
k₁	Grade A	min	–	–	–	–	–	–	–	–	–	–	–
k₁	Grade B	min	11.66	12.8	14.41	15.46	17.21	17.91	19.31	20.71	22.75	24.15	26.25
r	min		1	1	1	1	1	1.2	1.2	1.6	1.6	2	2
s	max=nominal size		41	46	50	55	60	65	70	75	80	85	90
s	Grade A	min	–	–	–	–	–	–	–	–	–	–	–

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