JIS B1130:2012 Screw and washer assemblies made of steel with plain washers - Washer hardness classes 200 HV and 300 HV.rar
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2020-11-04
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JIS B1130-2012 带普通垫圈的螺钉和垫圈组件 垫圈硬度等级为220HV和300HV JIS B1130:2012 Screw and washer assemblies made of steel with plain washers - Washer hardness classes 200 HV and 300 HV