Home / Standards / GB/T 6786-1986 GB/T 6786-1986 Abolished Spark plug M14×1.25 with flat seating and cylinder head housing M14×1.25 平座火花塞及其气缸盖安装孔 Standard Type GBT ICS 43.060.50 CCS T37 Status 废止 Issue Date 1986-08-28 Implementation 1987-07-01 Responsible Dept 工业和信息化部 Drafting Unit N/A