rivet-----fastener,score

We have many items of the products with different materials and size etc. to be chosen according to buyers' requirements

3  Surface finish:zinc plated, HDG, black,plain
4  Hardness grade: 8.8s,10.9s ,12.9s 

2  Size: M4 x 20 to M6 x 20

1  Material :carbon steel, low-carbon and mid-carbon steel,Copper,Aluminum,Iron,or stainless steel and so on.

sleeve(hardware,fastener,score)

We could manufacture kinds of fasteners with different materials and sides as to meeting customers' needs