High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Flange Bolts

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Product Photos and Information

High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Fla (

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

High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Fla ( (7)

High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Fla ( (6)

High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Fla ( (5)

High Strength Grade 4.8 8.8 10.9 12.9 Hot Dip Galvanized HDG DIN6921 Fla ( (4)

Product Standards

Hexagon head flange bolts DIN 6921
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

Dabang Fasteners is a wholly-owned subsidiary of Hebei Chengyi Engineering Materials Co., Ltd.
Our parent company has 21 years experience in fastener production and is ISO9001 ISO14001 ISO45001 SGS certified.
We focus on providing customers with competitive products that meet user needs.
--- Factory price, saving 15-30% of the middleman price difference.
--- exporting to 154 countries, accumulatively serving 1800+ customers, rich export experience
--- 5000 tons in stock, up to 3000 tons per month, average delivery time 7-20 days.
--- After-sales team of 25 people, solve all after-sales problems

0 Risk Commitment
--- If the product quality and packaging problems are found after receiving the goods,
help solve the problem and unconditionally compensate the loss within 30 days.

Our added value
--- In China, provide you with free factory inspection services.