IS 13153 : 2024/ISO 8279 : 2008 Aerospace - Nuts, Hexagonal, Plain, Normal Height, Normal Across Flats, with MJ Threads, Classifications: 600 Mpa (at Ambient Temperature)/120 °C, 600 Mpa (at Ambient Temperature)/235 °C, 900 Mpa (at Ambient Temperature)/425 °C, 1 100 Mpa (at Ambient Temperature)/235 °C, 1 100 Mpa (at Ambient Temperature)/315 °C, 1 100 Mpa (at Ambient Temperature)/650 °C, 1 210 Mpa (at Ambient Temperature)/730 °C, 1 250 Mpa (at Ambient Temperature)/235 °C And 1 550 Mpa (at Ambient Temperature)/600 °C - Dimensions
NATIONAL FOREWORD
This Indian Standard (First Revision) which is identical to ISO 8279 : 2008 'Aerospace - Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions' issued by International Organization for Standardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of the Air and Space Vehicles Sectional Committee and approval of the Transport Engineering Division Council.
This standard was first published in 1991. During formulation of IS 13153 : 1991, assistance was derived from ISO 8279 : 1985. First revision of this standard is undertaken to align it with the latest version of ISO 8279 : 2008.
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.