The National Trade Union of Metal and Engineering Workers (Zenkokukinzoku) was a trade union representing machining workers in Japan.
The union was founded in 1947 and was initially chaired by Kanson Arahata.
[1] It was a founding affiliate of the General Council of Trade Unions of Japan.
[3] In 1989, it merged with the National Machinery and Metal Workers' Union to form the National Metal and Machinery Workers' Union.
[4][5] A minority of members instead split away to form the All Japan Metal and Machinery Information Workers' Union.