China Trending Products Stainless Steel U Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji manufacturers and suppliers

Trending Products Stainless Steel U Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji

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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our firm for the long-term to create jointly with consumers for mutual reciprocity and mutual reward for M3 Allen Bolt , Stainless Steel Hex Bolt , 8.8 Screws , And there are also many foreign friends who came for sight seeing, or entrust us to buy other stuff for them. You are most welcome to come to China, to our city and to our factory!

Trending Products Stainless Steel U Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji Detail:

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ISO7380 Hex Socket Pan Head Screw Grade7

d		M3	M4	M5	M6	M8	M10	M12	M16
P	Pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2
a	Max	1	1.4	1.6	2	2.5	3	3.5	4
a	Min	0.5	0.7	0.8	1	1.25	1.5	1.75	2
d_k	Max	5.7	7.6	9.5	10.5	14	17.5	21	28
d_k	Min	5.4	7.24	9.14	10.07	13.57	17.07	20.48	27.48
e	Min	2.303	2.873	3.443	4.583	5.723	6.863	9.149	11.429
k	Max	1.65	2.2	2.75	3.3	4.4	5.5	6.6	8.8
k	Min	1.4	1.95	2.5	3	4.1	5.2	6.24	8.44
s	Nominal	2	2.5	3	4	5	6	8	10
	Max	2.08	2.58	3.08	4.095	5.14	6.14	8.175	10.175
	Min	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025
t	Min	1.04	1.3	1.56	2.08	2.6	3.12	4.16	5.2
Minimum tension load(N)	8.8Grade	3220	5620	9080	12900	23400	37100	53900	100000
	10.9Grade	4180	7300	11800	16700	30500	48200	70200	130000
	12.9Grade	4910	8506	13800	19600	35700	56600	82400	154000

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ISO7380 Hex Socket Pan Head Screw Grade10

There are many types of screws, one is called hexagon socket screws. When purchasing, the salesperson will also ask you which type to choose. Originally, there are many classifications of hexagon socket screws.

There are several types of hexagon socket screws
1. There is a type of hexagon socket screw called pan head. After the screw is installed, its head protrudes on the surface, which makes it more convenient to screw the screw later. This product can be seen on some household appliances.

2.There are countersunk head hexagon socket screws, which means that it will not protrude from the surface after screwing, and it will not affect the appearance. However, if there is a problem that is difficult to screw when screwing, the screw cannot be started.

3.There are also cylindrical head hexagon socket screws, which are similar to the second type of screws. They are relatively strong and require a wrench of the corresponding specification to remove the screws. Generally speaking, they are used on machine tools.

The screw is rusted and can’t be unscrewed, what should I do?
In life, many friends have encountered similar problems. Once the screws are rusted, no matter how much effort is used, they cannot be unscrewed. Because the screw is exposed to the air, if the surrounding environment is relatively humid, after a long time, it is prone to rust. In fact, don’t use brute force, you need to master the skills of screwing.

Tap it first, tap the corroded screw with a wrench, and tap the handle lightly, because if the corroded part is loose, it can be unscrewed later.

If it still doesn’t work after tapping, you can drop a small amount of oil, and then rotate it gently with the wrench a few times. If you don’t have oil at home, you can also use Coke because it will remove rust.

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Our enterprise since its inception, often regards solution excellent as enterprise life, continually strengthen output technology, enhance product high quality and continually strengthen organization total high-quality administration, in strict accordance using the national standard ISO 9001:2000 for Trending Products Stainless Steel U Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji , The product will supply to all over the world, such as: Hanover, Munich, Naples, Hard work to keep making progress, innovation in the industry, make every effort to first-class enterprise. We try our best to build the scientific management model, to learn abundant experienced knowledge, to develop advanced production equipment and production process , to create the first-call quality goods, reasonable price , high quality of service , quick delivery , to present you create new value .

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