发布时间:2025-01-20 16:21:30
六角螺母.垫片是标准件
机械制图画法中规定螺栓公称直径为d螺母公称直径为D,且d=D
六角螺母
外径为2d
高度为0.8d
垫片
内径为1.1d
外径为2.2d
厚度为0.15d
hauswirt47海氏 ho40ei 智能电烤箱 40l详细介绍
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