JIS B 1256:2008 平ワッシャー規格と仕様

範囲: This Standard specifies the circular plain washers (hereafter referred to as "plain washers") made of steel and stainless steel used for bolts, screws and nuts of general use. When requiring the dimensions of washers other than those specified in the text of this Standard, the reference dimensions should be selected from those in JIS B 1250 and the tolerances should be selected from those in JIS B 1022. The shape and dimensions of square washer is shown in Annex JA as reference. NOTE: The International Standards corresponding to this Standard are as fol- lows. ISO 7089: 2000 Plain washers- Normal series- Product grade A ISO 7090: 2000 Plain washers, chamfered- Normal series-- Product grade A ISO 7091: 2000 Plain washers- Normal series -- Product grade C ISO 7092: 2000 Plain washers- Sma]] series- Product grade A ISO 7093-1:2000 Plain washers- Large series- Part I: Product grade A ISO 7093-2: 2000 Plain washers -- Large series -- Part 2 .' Product grade U ISO 7094: 2000 Plain washers- Extra large series- Product grade U (Overall evaluation: MOD) In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical). MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21.

JIS B 1256:2008 規範的参照