Using carbon steel wire, cold heading process production + high speed wire rolling machine to complete, the head for subsequent krollers.
Surface roughness Ra3.2, machining tolerance +/-0.05.

The surface treatment is green black zinc with no red rust after 96H salt spray.
PE bag + carton packaging shipping.
Tiansheng company specializes in r&d and production of non-standard fastening customized products for 12 years. You are welcome to customize products with drawings or samples.