SS-EN-ISO-2320 › Fasteners - Prevailing torque steel nuts - Functional properties (ISO 2320:2015)
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This International Standard specifies the functional properties for prevailing torque steel nuts when tested at an ambient temperature range of +10 °C to +35 °C. It includes a combined test method to determine the prevailing torque properties and the torque/clamp force properties at the same time.It applies to prevailing torque all metal type nuts and prevailing torque non-metallic insert type nuts: with triangular ISO thread in accordance with ISO 68-1; with diameter/pitch combination in accordance with ISO 261 and ISO 262; with coarse pitch thread M5 to M39 or with fine pitch thread M8 × 1 to M39 × 3; with thread tolerances in accordance with ISO 965-2; with mechanical properties in accordance with ISO 898-2;Prevailing torque values specified in this standard are based on laboratory test conditions.NOTE 1 Actual prevailing torques in practical application can vary.NOTE 2 All metal type nuts conforming to the requirements of this International Standard are used in applications ranging from -50 °C to +150 °C.NOTE 3 Non-metallic insert type nuts conforming to the requirements of this International Standard are used in applications ranging from -50 °C to +120 °C.WARNING Temperatures outside the ambient temperature range can influence the functional properties (torque/clamp force and prevailing torque properties), see Annex A.
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Designation Name
SS-EN ISO 2320:2016
Revision Level
2016 EDITION
Status
Current
Publication Date
Jan. 12, 2016
Language(s)
English
Page Count
36
International Equivalent
EN ISO 2320:2015(IDT); ISO 2320:2015(IDT)