This document specifies the characteristics of prevailing torque (all metal) hexagon high nuts, in steel and stainless steel, with metric coarse pitch thread M5 to M39, and with product grades A and B.

NOTE These nuts are designed with an overall heigth h_min=m_min (as specified in ISO898-2 and ISO4033 for style 2) plus the prevailing torque feature. h_max has been established in function of h_min; therefore, the tolerance (h_max–h_min) does not follow the ISO code system for tolerances (IT system). The wrenching height m_w,min corresponds to the values specified for style 1.

If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-2 or ISO 3506-2.

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