Live item process progress of the machining aluminum parts

What is the meaning of 5V1 and 8V1 on drawings?

Design engineers explained as follows: 5V1,8V1 marked relatively rare, it belongs to the tire valve thread, is a special kind of thread. The parameters are as follows:

Source: Shenzhen Winnewtech Metal Parts    12-01-2017

CONTACT US

Contact: Mr. Yao

Email: inquiry@winnewtech.com

Phone: +86-18938049948

Tel: + 86-(755)-81498498

Add: NO.1,QiluThreeRoad,Shangnan Industry,Shajing Baoan District,Shenzhen City,Guangdong Province,China