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GB 5780 – 1986 – Bu lông lục giác

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Mô tả

GB 5780 – 1986 – Bu lông lục giác

Screw Thread		M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24	(M27)
P	Pitch	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3	3
b	L≤125	16	18	22	26	30	34	38	42	46	50	54	60
	125＜L≤200	–	–	28	32	36	40	44	48	52	56	60	66
	L＞200	–	–	–	–	–	53	57	61	65	69	73	79
c	max	0.5	0.5	0.6	0.6	0.6	0.6	0.8	0.8	0.8	0.8	0.8	0.8
d_a	max	6	7.2	10.2	12.2	14.7	16.7	18.7	21.2	24.4	26.4	28.4	32.4
d_s	max	5.48	6.48	8.58	10.58	12.7	14.7	16.7	18.7	20.84	22.84	24.84	27.84
d_s	min	4.52	5.52	7.42	9.42	11.3	13.3	15.3	17.3	19.16	21.16	23.16	26.16
d_w	min	6.7	8.7	11.4	14.4	16.4	19.2	22	24.9	27.7	31.4	33.2	38
e	min	8.63	10.89	14.2	17.59	19.85	22.78	26.17	29.56	32.95	37.29	39.55	45.2
k	Nominal Size	3.5	4	5.3	6.4	7.5	8.8	10	11.5	12.5	14	15	17
	max	3.88	4.38	5.68	6.85	7.95	9.25	10.75	12.4	13.4	14.9	15.9	17.9
	min	3.12	3.62	4.92	5.95	7.05	8.35	9.25	10.6	11.6	13.1	14.1	16.1
k₁	min	2.2	2.5	3.45	4.2	4.95	5.8	6.5	7.4	8.1	9.2	9.9	11.3
r	min	0.2	0.25	0.4	0.4	0.6	0.6	0.6	0.6	0.8	1	0.8	1
s	max	8	10	13	16	18	21	24	27	30	34	36	41
s	min	7.64	9.64	12.57	15.57	17.57	20.16	23.16	26.16	29.16	33	35	40
Length of Thread b		–	–	–	–	–	–	–	–	–	–	–	–

Screw Thread		M30	(M33)	M36	(M39)	M42	(M45)	M48	(M52)	M56	(M60)	M64
P	Pitch	3.5	3.5	4	4	4.5	4.5	5	5	5.5	5.5	6
b	L≤125	66	72	78	84	–	–	–	–	–	–	–
	125＜L≤200	72	78	84	90	96	102	108	116	124	132	140
	L＞200	85	91	97	103	109	115	121	129	137	145	153
c	max	0.8	0.8	0.8	1	1	1	1	1	1	1	1
d_a	max	35.4	38.4	42.4	45.4	48.6	52.6	56.6	62.6	67	71	75
d_s	max	30.84	34	37	40	43	46	49	53.2	57.2	61.2	65.2
d_s	min	29.16	32	35	38	42	44	47	50.8	54.8	58.8	62.8
d_w	min	42.7	46.5	51.1	55.9	60.6	64.7	69.4	74.2	78.7	83.4	88.2
e	min	50.85	55.37	60.79	66.44	72.02	76.95	82.6	88.25	93.56	99.21	104.86
k	Nominal Size	18.7	21	22.5	25	26	28	30	33	35	38	40
	max	19.75	22.05	23.55	26.05	27.05	29.05	31.05	34.25	36.25	39.25	41.25
	min	17.65	19.95	21.45	23.95	24.95	26.95	28.95	31.75	33.75	36.75	38.75
k₁	min	12.4	14	15	16.8	17.5	18.9	20.1	22.2	23.6	25.7	27.1
r	min	1	1	1	1	1.2	1.2	1.6	1.6	2	2	2
s	max	46	50	55	60	65	70	75	80	85	90	95
s	min	45	49	53.8	58.8	63.8	68.1	73.1	78.1	82.8	87.8	92.8
Length of Thread b		–	–	–	–	–	–	–	–	–	–	–

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