scope:

This standard specifies the mechanical and performance requirements for prevailing torque-type steel hexagon nuts, hexagon nut and washer assemblies and hexagon flange nuts, tested at room temperature as specified in ISO 1.

a) with nominal diameters M4 to M24 inclusive.

b) with strength requirements of property classes 8 and 10, according to ISO 898/2.

c) with dimensions as specified in the Worldwide Product Standards or on Worldwide Utility Part drawings.

d) within the following temperature ranges:

1) -50 to +300 °C for all-metal nuts.

2) -50 to 120 +120 °C for non-metallic insert nuts.

NOTE: This specification is not applicable to parts which do not have a coating incorporating a selflubrication constituent or which are not lubricated to meet the requirements of WZ100, unless otherwise specified.

Unless stated otherwise, all reference to nuts in this standard are to both all metal and non-metallic insert prevailing torque hexagon nuts, hexagon nut and washer assemblies and prevailing torque hexagon flange nuts.

NOTE: These products shall be capable of being assembled on bolts with pilot points in accordance with WA 900