Most BONOSS wheel nut materials are high-strength alloy steel, forged process, ISO898-6 grade 10 standard performance, relevant third-party authoritative testing institutions TUV and SGS test report please see attachment. At the same time, some BONOSS wheel nut materials are aluminum alloy 7075T6 or titanium alloy materials, forged process, related third-party authoritative testing institutions TUV and SGS test report please check here:
Different BONOSS lug nuts have different rust and corrosion resistance due to different materials and processes. Forged 7075T6 aluminum alloy wheel nuts usually use oxidation coloring process, with many beautiful and bright colors, but it has disadvantage to strong alkaline environment, when it stay in strong alkaline environment, it will appear fade and color corrosion. The titanium alloy wheel nut uses a special coloring process, and the overall rust and corrosion resistance is more prominent. High-strength alloy steels are generally coated with rust-proofing, which is more rust-resistant, but it has only few colors. Detailed test report of TUV, please see attached as follow.
Thread sizes and models are important to lug nut. Incorrect nuts thread size may cause safety problems that choose the correct nut thread is safe basis. Generally speaking, the bolts for different car models are often different. Sometimes the same model will have different bolts due to different years. In order to ensure driving safety, it is better to contact BONOSS professional seller before purchasing. We have a complete database. We will provide you professional and accurate services.
It is in order to meet the needs of different users and occasions, for example, due to the difference in the length of the original car bolts, some open end wheel nuts have a length less than the bolt fit length, choose the open end wheel nuts will hit the screw, that choose theclosed end wheel nuts will better.
There are many possibilities for the contact surface of the hub: 60 degree taper seated, R12 ball seated, R13 ball seated, R14 ball seated, flat seated, etc. For safety driving, lug nut contact surface must match the contact surface of the wheel lug nut bore. Incorrect selection may cause the nut too loose during driving, which seriously affects driving safety. Therefore, it is recommended to contact BONOSS professional customer service before purchasing, we will provide you with professional and accurate services.
Standard installation is the basis of driving safety. The minimum number of turns and the locking torque are important parameters for installation. Since the BONOSS lug nut has the same grade or performance as the original nut, the BONOSS lug nut can withstand greater tightening torque. However, considering different wheel hubs and original thread, we recommend using the minimum number of turns and torque recommended by the original car for locking. Generally, the minimum number of turns and the locking torque for different threads are as follows:
(Minimum number of turns for wheel bolts / nuts):
M12 x 1.25 = 8.0 turns = approx. 10 mm of load bearing shaft length
M12 x 1.50 = 6.5 turns = approx. 10 mm of load bearing shaft length
M12 x 1.75 = 6.5 turns = approx. 12 mm of load bearing shaft length
M14 x 1.25 = 9.0 turns = approx. 12mm of load bearing shaft length
M14 x 1.50 = 7.5 turns = approx. 12 mm of load bearing shaft length
1/2″ UNF = 8.0 turns = approx. 11 mm of load bearing shaft length
Noted: Forged aluminum alloy lug nuts are recommended more tightening number of turns to ensure load safety.