GB/Z 32564-2016: Nut design guide

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Scope

This Guide gives guidelines for nut design in accordance with GB/T 3098.2,
so as to prevent failure form of thread tripping when the static tension is
overload.
This Guide is also applicable to non-standard nut or internal thread with bolt
(in accordance with GB/T 192). However, dimension factors, such as the
width of the edges or other dimensions associated with the stiffness of the nut,
the thread tolerances, etc., shall affect the load carrying capacity of bolt and
nut connection pair. Therefore, the calculation results shall be subjected to
validation test.
NOTE The "bolts" and "nuts" mentioned in this Guide are used as general terms for
internal and external threaded fasteners.

Basic Data

Standard ID	GB/Z 32564-2016 (GB/Z32564-2016)
Description (Translated English)	Nut design guide
Sector / Industry	National Standard
Classification of Chinese Standard	J13
Classification of International Standard	21.060.10
Word Count Estimation	19,137
Date of Issue	2016-02-24
Date of Implementation	2016-06-01
Quoted Standard	GB/T 192; GB/T 196; GB/T 3098.1; GB/T 3098.2; ISO 18265
Adopted Standard	ISO/TR 16224-2012, MOD
Regulation (derived from)	National Standard Announcement No
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Summary	This standard specifies the nut design criteria in accordance with GB/T 3098.2 to prevent the occurrence of the failure of the grading release when the static tension is overloaded. This standard also applies to non-standard nuts or internal threads with which the bolt is fitted. However, dimensional factors, such as the width of the edge or other dimensions related to nut stiffness, thread tolerances, etc., shape the load carrying capacity of the bolt and nut coupling pairs. Therefore, the verification test should be carried out for the calculation results.