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High Strength Grade 4.8 8.8 10.9 12.9 Yellow Zinc Plated DIN6921 Flange Bolts

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High Strength Grade 4.8 8.8 10.9 12.9 Yellow Zinc Plated DIN6921 Flange Bolts

We are committed to become the world's top fastening solutions provider, let Chinese prod-uct enterworld class, let the Chengyi production become synonymous with quality. To this end we need perseverance. At the same time, we also shoulder the responsibility of the society and the expectations of theemployees. In the future, we will become a respected enterprise.

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Name	Hex Flange Bolts	Materials	Carbon Steel/Stainless Steel
Standards	DIN ISO UNC BSW JIS etc.	Strength level	4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80
Size	M3-M50	Surface finish	ZP\HDG\BLACK\Dacromet etc.
Length	15-500	Samples	Available

Product Standards

Hexagon head thick shank half thread bolts M1.6-M39 DIN 931

Thread specification			M5	M6	M8	M10	M12	M14	M16	M20
d			M5	M6	M8	M10	M12	M14	M16	M20
P	pitch	coarse teeth	0.8	1	1.25	1.5	1.75	2	2	2.5
		fine teeth 1	/	/	1	1.25	1.5	1.5	1.5	1.5
		fine teeth 2	/	/	/	1	1.25	/	/	/
b	L≤125		16	18	twenty two	26	30	34	38	46
	125＜L≤200		/	/	28	32	36	40	44	52
	L＞200		/	/	/	/	/	/	57	65
c	minimum		1	1.1	1.2	1.5	1.8	2.1	2.4	3
d a	Type A	maximum value	5.7	6.8	9.2	11.2	13.7	15.7	17.7	22.4
d a	Type B	maximum value	6.2	7.4	10	12.6	15.2	17.7	20.7	25.7
dc	maximum value		11.8	14.2	18	22.3	26.6	30.5	35	43
ds	maximum value		5	6	8	10	12	14	16	20
ds	minimum		4.82	5.82	7.78	9.78	11.73	13.73	15.73	19.67
of u	maximum value		5.5	6.6	9	11	13.5	15.5	17.5	twenty two
dw	minimum		9.8	12.2	15.8	19.6	23.8	27.6	31.9	39.9
and	minimum		8.71	10.95	14.26	16.5	17.62	19.86	23.15	29.87
f	maximum value		1.4	2	2	2	3	3	3	4
k	maximum value		5.4	6.6	8.1	9.2	11.5	12.8	14.4	17.1
k 1	minimum		2	2.5	3.2	3.6	4.6	5.1	5.8	6.8
r 1	minimum		0.25	0.4	0.4	0.4	0.6	0.6	0.6	0.8
r 2	maximum value		0.3	0.4	0.5	0.6	0.7	0.9	1	1.2
r 3	minimum		0.1	0.1	0.15	0.2	0.25	0.3	0.35	0.4
r 4	≈		3	3.4	4.3	4.3	6.4	6.4	6.4	8.5
s	max = nominal		8	10	13	15	16	18	twenty one	27
s	minimum		7.78	9.78	12.73	14.73	15.73	17.73	20.67	26.67
t	maximum value		0.15	0.2	0.25	0.3	0.35	0.45	0.5	0.65
t	minimum		0.05	0.05	0.1	0.15	0.15	0.2	0.25	0.3
thread length b			-	-	-	-	-	-	-	-

About Us

We are committed to become the world's top fastening solutions provider, let Chinese product enterworld class, let the Chengyi production become synonymous with quality. To this end we need perseverance. At the same time, we also shoulder the responsibility of the society and the expectations of theemployees. In the future, we will become a respected enterprise.

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Our export countries include Russia, South Korea, Britain, France, Germany, Italy, Canada, Mexico,Brazil, Argentina, Chile, Australia, Indonesia, Thailand, Singapore, Saudi Arabia, Syria, Egypt, Tanzania,Kenya and other countries. Our products will be spread all over the world!