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High Strength Grade 4.8 8.8 10.9 12.9 Yellow Zinc Plated DIN316 Butterfly Wing Bolts

High Strength Grade 4.8 8.8 10.9 12.9 Yellow Zinc Plated DIN316 Butterfly Wing Bolts

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High Strength Grade 4.8 8.8 10.9 12.9 Yellow Zinc Plated DIN316 Butterfly Wing 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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Product Photos and Information

Name	Wing 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

Wing Bolts Thumb screws DIN 316

Thread size		M4	M5	M6	M8	M10	M12	M16	M20	M24
d		M4	M5	M6	M8	M10	M12	M16	M20	M24
P	pitch	0.7	0.8	1	1.25	1.5	1.75	2	2.5	3
dk	maximum value	8	11	13	16	20	twenty three	29	35	44
dk	minimum	6	8	10	13	17	20	26	32	41
d 3	maximum value	7	9	11	12.5	16.5	19.5	twenty three	29	37.5
d 3	minimum	5.5	7.5	9	10.5	14.5	17.5	twenty one	27	35
n	maximum value	20	26	33	39	51	65	73	90	110
n	minimum	18	twenty four	30	36	48	62	70	86	106
h 1	maximum value	1.9	2.3	2.3	2.8	4.4	4.9	6.4	6.9	9.4
h 1	minimum	1.1	1.5	1.5	2	3.6	4.1	5.6	6.1	8.6
h 2	maximum value	2.3	2.8	3.3	4.4	5.4	6.4	7.5	8	10.5
h 2	minimum	1.7	2.3	2.7	3.6	4.6	5.6	6.5	7	9.5
H	maximum value	10.5	13	17	20	25	33.5	37.5	46.5	56.5
H	minimum	8.5	11	15	18	twenty three	31	35	44	53.5
k	maximum value	4.6	6.5	8	10	12	14	17	twenty one	25
k	minimum	3.2	4	5	6.5	8	10	13	16	20

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!