1.material:spring steel, stainless steel
2.finish :zinc,black,dacromet
3.hardness:HV300-500
4.heat treatment:HRC40-50

1.strict inspection process

2.Size:M4-M8
3.Our company have 7 year's experience in spring nuts

4.Stamping process and quoting according to customers' engineering drawings.
5.Have high strength of the rib tighten role, because of its fast, convenient installation, are widely used in vehicle parts installation location
6. Our company has strong design team and is equipped with modern equipment

Competitive advantages: New product, in a variety of designs, well and high quality control, earth-friendly products, customer's designs and logos are welcome