Home / Standards / GB/T 3478.1-1995 GB/T 3478.1-1995 Abolished Straight cylindrical involute splines--Modules，basic rack profiles and tolerances 圆柱直齿渐开线花键模数 基本齿廓 公差 Standard Type GBT ICS N/A CCS J18 Status Abolished Issue Date 1995-07-12 Implementation 1996-05-01 Centralized Committee 国家标准委 Issuing Authority 国家标准委