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DIN EN ISO 2320-2009
Prevailing torque type steel nuts - Mechanical and performance properties
适用范围：This International Standard specifies the mechanical and performance properties for prevailing torque typesteel nuts when tested at an ambient temperature range of +10 ~C to +35 ~C. It includes a single test todetermine the prevailing torque properties (performance properties) and/or the torque/clamp force properties.This International Standard applies to prevailing torque all metal type nuts and prevailing torque non-metallicinsert type nuts:a) with triangular ISO thread according to ISO 68-1;b) with diameter/pitch combination according to ISO 261 and ISO 262;c) with coarse pitch thread M3 to M39 and mechanical properties according to ISO 898-2;d) with fine pitch thread M8xl to M39~3 and mechanical properties according to ISO 898-6;e) within the temperature range of-50 ~C to +150 ~C for prevailing torque all metal type nuts;NOTE 1 See Clause 7, paragraph 3.f) within the temperature range of-50 ~C to +120 ~C for prevailing torque non-metallic insert type nuts.NOTE 2 See Clause 7, paragraph 4.
实施日期： 2009-03-01
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