Home / Standards / GB/T 3478.7-2008 GB/T 3478.7-2008 Active Straight cylindrical involute splines - Metric module, side fit - Part 7: 37.5°pressure angle M and W values 圆柱直齿渐开线花键 （米制模数 齿侧配合) 第7部分：37.5°压力角M值和W值 Standard Type GBT ICS 21.120.30 CCS J18 Status 现行 Issue Date 2008-09-27 Implementation 2009-05-01 Responsible Dept 国家标准委 Drafting Unit N/A