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1、Fasteners紧固件Product grade F产品等级FDIN267Part 6第6部分Mechanische Verbindungselemente; technische Lieferbedingungen, Ausfhrungen und Magenauigkeit fr Produktklasse F产品等级F紧固件；发货技术条件；设计和尺寸精确度In keeping with current practice in standards published by the International Organization for Standardization (ISO),
2、a comma has been used throughout as the decimal marker.为了与国际标准组织（ISO）的现行标准条例相符，使用逗号作十进制标记。Dimensions in mm尺寸单位毫米1 Scope and field of application1 适用范围和领域This standard specifies tolerances for product grade F screws, bolts and nuts with thread diameters from 1 to 3 mm.本标准详细说明了产品等级F的螺纹直径为1-3毫米的螺丝、螺钉和螺
3、母的公差。It is recommended that this standard should also be used for non-standardized fasteners.本标准同样适用于非标准化的紧固件。Product grade F generally refers to the quality of products for which stringent requirements are made with respect to tolerances (e.g. in precision mechanics).产品等级F泛指根据产品质量所制定的严格公差要求（如在精确的技工
4、中）。 2 Thread diameters2 螺纹直径Table 1 表1Thread diameter螺纹直径Tolerance 1) 公差1)Internal thread内螺纹(nuts)(螺母）External thread外螺纹(bo1ts and screws)(螺钉和螺丝）1 1.45H4h1.4 36H6g1) Plated threads shall not infringe the maximum material limit with zero fundamental deviation.1）电镀螺纹不得违反零度基本偏差的最大材料限制。3 Thread lengths3
5、 螺纹长度P = pitch of thread P=螺距4 Nominal lengths4 公称长度Continued on pages 2 to 5.详见第2页到第5页。5 Driving geometry5 驱动几何体5.1 Widths across flats and widths across corners5.1 平面的宽度和角度的宽度The specified tolerances for widths across flats and the minimum widths across corners apply to fasteners where the height
6、of hexagons, m, is equal to 0,7 m or more:本标准的平面宽度和最小角度宽度公差适用于高度不少于0.7米的六角螺母的紧固件。5.2 Slots5.2 插槽Table 2表2Slot width, n插槽宽度,nNominal value公称值Tolerance公差0.3C110.3 1.4 3h13h13Table 4表4Thread diameter螺纹直径Tolerance on D2)直径公差2)1 1.4h101.4 0.8 1.2h12h131.2h137 Thickness of nuts7. 螺母厚度8 Shank diameters8 柄径
7、The shank diameter is approximately equal to the pitch diameter.柄径约等于中径。9 Geometrical tolerances9 形位公差Table 6表6Figure No图号Feature图像Tolerance based on dimension尺寸公差1S2D3d4d5d6d7d8d9d10d11d12S13141516Explanatory notes注释This standard has been prepared by Normenausschu Feinmechanik und Optik (Precision Mechanics and Optics Standards Committee).本标准由精密技工和光学标准委员会制备。
