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Norm

ÖNORM EN ISO 2320

Issue date: 1998 04 01

Prevailing torque type steel hexagon nuts - Mechanical and performance requirements (ISO 2320:1997)

This International Standard specifies the mechanical and performance properties for prevailing torque type steel hexagon nuts (including those with flange) when tested ov...
Withdrawn: 2009 02 15
Publisher:
Austrian Standards International
Format:
Digital | 26 Pages
Language:
German | English
Optionally co-design standards:
This International Standard specifies the mechanical and performance properties for prevailing torque type steel hexagon nuts (including those with flange) when tested over an ambient temperature range of 10 C to 35 C . Properties will vary at higher and lower temperature. It applies to prevailing torque type nuts with nominal thread diameters up to and including 39 mm; of triangular IS0 thread according to IS0 68; with diameter/pitch combinations according to IS0 261; with thread tolerances 6H according to IS0 965-2; with specific mechanical requirements; with dimensions as specified in product standards provided they make reference to this International Standard; within the temperature range -50 C to +300 C for all metal type nuts; within the temperature range -50 C to +20 C for non-metallic insert type nuts. It does not apply to nuts requiring special properties which may require special materials or coatings to improve weldability; corrosion resistance; performance outside the above specified temperature ranges. Prevailing torque performance decreases with increasing re-use. The nut user should consider the implications of decreased performance prior to re-use.
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