Factory wholesale T Head Bolt - Heat treatment NISSAN REAR 37 Wheel Bolt – JINQIANG Detail:
Product description
Hub bolts are high-strength bolts that connect vehicles to the wheels. The connection location is the hub unit bearing of the wheel! Generally, class 10.9 is used for mini-medium vehicles, class 12.9 is used for large-sized vehicles! The structure of the hub bolt is generally a knurled key file and a threaded file! And a hat head! Most of the T-shaped head wheel bolts are above 8.8 grade, which bears the large torsion connection between the car wheel and the axle! Most of the double-headed wheel bolts are above grade 4.8, which bear the lighter torsion connection between the outer wheel hub shell and the tire.
Cold heading forming of high-strength bolts
Usually the bolt head is formed by cold heading plastic processing. The cold heading forming process includes cutting and forming, single-station single-click, double-click cold heading and multi-station automatic cold heading. An automatic cold heading machine performs multi-station processes such as stamping, heading forging, extrusion and diameter reduction in several forming dies.
(1) Use a semi-closed cutting tool to cut the blank, the easiest way is to use a sleeve type cutting tool.
(2) During the transfer of short-sized blanks from the previous station to the next forming station, the fasteners with complex structures are processed to improve the accuracy of the parts.
(3) Each forming station should be equipped with a punch return device, and the die should be equipped with a sleeve-type ejector device.
(4) The structure of the main slider guide rail and process components can ensure the positioning accuracy of the punch and the die during the effective use period.
(5) The terminal limit switch must be installed on the baffle that controls the material selection, and attention must be paid to the control of the upsetting force.
Our Hub bolt quality standard
10.9 hub bolt
| hardness | 36-38HRC |
| tensile strength | ≥ 1140MPa |
| Ultimate Tensile Load | ≥ 346000N |
| Chemical Composition | C:0.37-0.44 Si:0.17-0.37 Mn:0.50-0.80 Cr:0.80-1.10 |
12.9 hub bolt
| hardness | 39-42HRC |
| tensile strength | ≥ 1320MPa |
| Ultimate Tensile Load | ≥406000N |
| Chemical Composition | C:0.32-0.40 Si:0.17-0.37 Mn:0.40-0.70 Cr:0.15-0.25 |
FAQ
Q1 what is your delivery time?
If stock good, we will delivery within 10 working days. For a customized order, 30-45 days.
Q2 how many employees of your company?
We have more than 300 employees.
Q3 what is nearest port?
Our port is Xiamen.
Q4 what kind of packing of your products?
It depends on products, usually we have box and carton, plastic box packing.
Q5 are you trading company or manufacturer?
We are professional manufacturer with more than 20 years experiences.
Q6 what about your quality control?
We always test material, the hardness, tensile, salt spray and so to guarantee the quality.
Q7 what is your payment terms?
We can accept TT,L/C,MONEYGRAM,WESTERN UNION and so on.
Q8 can you offer free samples?
If we have stock samples, we can offer free samples, please pay express fee yourself.
Product detail pictures:
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It can be our accountability to satisfy your preferences and competently provide you. Your satisfaction is our greatest reward. We are searching ahead towards your visit for joint growth for Factory wholesale T Head Bolt - Heat treatment NISSAN REAR 37 Wheel Bolt – JINQIANG , The product will supply to all over the world, such as: Australia, Vietnam, Anguilla, So that you can utilize the resource from the expanding info in international trade, we welcome shoppers from everywhere on-line and offline. In spite of the good quality solutions we offer, effective and satisfying consultation service is supplied by our specialist after-sale service team. Product lists and detailed parameters and any other info weil be sent to you timely for your inquiries. So please make contact with us by sending us emails or call us if you have any questions about our corporation. ou may also get our address info from our web page and come to our company to get a field survey of our merchandise. We are confident that we are going to share mutual achievement and create strong co-operation relations with our companions in this marketplace. We're searching forward for your inquiries.
By Rosemary from Philippines - 2017.10.25 15:53
Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
By Bernice from Lyon - 2017.12.31 14:53
