English Português Русский Français Arabic

Inquiry

Products

Home page

High Strength Grade 4.8 8.8 10.9 12.9 Black Oxide DIN7991 CSK Flat Head Hex Socket Bolts

High Strength Grade 4.8 8.8 10.9 12.9 Black Oxide DIN7991 CSK Flat Head Hex Socket Bolts

Category: Prouct

Key words：

High Strength Grade 4.8 8.8 10.9 12.9 Black Oxide DIN7991 CSK Flat Head Hex Socket 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.

Email us：admin@hbcy-fastener.com

Back to list

Message

Send Email

Product Photos and Information

Name	CSK Head hex socket 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 socket head countersunk head screws DIN 7991

Thread specification		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
d		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
P	pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
a	toll.(+2)	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	60°	60°
b	L≤125	12	14	16	18	twenty two	26	30	34	38	42	46	50	54
	125＜L ≤ 200	/	/	/	twenty four	28	32	36	40	44	48	52	56	60
	L＞200	/	/	/	/	/	45	49	53	57	61	65	69	73
dk	max = nominal	6	8	10	12	16	20	twenty four	27	30	33	36	36	39
dk	minimum	5.7	7.64	9.64	11.57	15.57	19.48	23.48	26.48	29.48	32.38	35.38	35.38	38.38
ds	max = nominal	3	4	5	6	8	10	12	14	16	18	20	twenty two	twenty four
ds	minimum	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67
and	minimum	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72	13.72	16	16
k	maximum value	1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
s	Nominal	2	2.5	3	4	5	6	8	10	10	12	12	14	14
	minimum	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032	12.032	14.032	14.032
	maximum value	2.1	2.6	3.1	4.12	5.14	6.14	8.175	10.175	10.175	12.212	12.212	14.212	14.212
t	max = nominal	1.2	1.8	2.3	2.5	3.5	4.4	4.6	4.8	5.3	5.5	5.9	8.8	10.3
t	minimum	0.95	1.55	2.05	2.25	3.2	4.1	4.3	4.5	5	5.2	5.6	8.44	9.87
Thousand pieces of steel weight ≈kg		-	-	-	-	-	-	-	-	-	-	-	-	-
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.

Certificate

Production Process

Exhibition/Partner Photos

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!