BS A 319-1997
带MJ螺纹的高度降低和减缩交叉平面的平六角头螺母分类:400MPa(室温)/425℃、600MPa(室温)/235℃、600MPa(室温)/315℃、600MPa(室温)/650℃、900MPa(室温)/235℃、900MPa(室温)/730℃、1100MPa(室温)/600℃.尺寸

Nuts, hexagonal, plain, reduced height, reduced across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/425 °C, 600 MPa (at ambient temperature)/235 °C, 600 MPa (at ambient temperature)/315 °C, 600 MPa (at ambient temperature)/650

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标准号

BS A 319-1997

发布日期

1997年10月15日

实施日期

1997年10月15日

废止日期

无

中国标准分类号

J13

国际标准分类号

49.030.30

发布单位

英国标准学会

被代替标准

96/704883 DC-1996

适用范围

This International Standard specifies the dimensions of plain, hexagonal nuts, reduced height, reduced across flats, with MJ threads, of classifications: 450MPa/425 C, 600 MPa/235 C, 600MPa/315 C, 600 MPa/650 C, 900 MPa/235 C, 900 MPa/730 C and 1 100 MPa/600 C. Nuts provided with holes are intended to be used with lockwire in conformity with ISO 245. This International Standard is only applicable for the compilation of aerospace product standards. note:1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the material or by the surface treatment.