China Cheap PriceList for Square Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji manufacturers and suppliers

Cheap PriceList for Square Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji

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Cheap PriceList for Square Bolts - ISO7380 Hex Socket Pan Head Screw Grade 10.9 8.8 Black Oxide – Hongji Detail:

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70% items delivered within 5 days

80% items delivered within 7 days

90% items delivered within 10 days

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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 eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" and the theory of "quality the basic, trust the first and management the advanced" for Cheap PriceList for Square 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: Belgium, Qatar, Jordan, High output volume, top quality, timely delivery and your satisfaction are guaranteed. We welcome all inquiries and comments. If you are interested in any of our products or have an OEM order to fulfill, please feel free to contact us now. Working with us will save you money and time.

8mm Hex Screw