Factory wholesale T Head Bolt - Heat treatment NISSAN REAR 37 Wheel Bolt – JINQIANG

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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.


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Factory wholesale T Head Bolt - Heat treatment NISSAN REAR 37 Wheel Bolt – JINQIANG detail pictures


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We insist about the theory of growth of 'High excellent, Performance, Sincerity and Down-to-earth working approach' to offer you with great company of processing 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: Bulgaria, Kuwait, Poland, In order to meet more market demands and long-term development, a 150, 000-square-meter new factory is under construction, which will be put into use in 2014. Then, we shall own a large capacity of producing. Of course, we are going to continue improving the service system to meet the requirements of customers, bringing health, happiness and beauty to everyone.
  • The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Odelia from Israel - 2018.09.19 18:37
    Staff is skilled, well-equipped, process is specification, products meet the requirements and delivery is guaranteed, a best partner!
    5 Stars By Hellyngton Sato from Indonesia - 2018.11.11 19:52
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