GB/T 9074.31-2017: Conical spring washers for assemblies

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Scope

This part of GB/T 9074 specifies the type dimensions, technical conditions and markings of tapered elastic washers for assemblies.
This section applies to tapered washers for bolts or screws and tapered washer assemblies in accordance with GB/T 9074.32 (hereinafter referred to as pads)
ring). This section applies to bolts or screws with specifications of 2.5mm~12mm and performance grades of 8.8 and 10.9 (GB/T 3098.1)
The gasket used. For bolts or screws with a performance rating below 8.8, the performance of the gasket will be significantly reduced due to deformation of the contact surface.
Note. After installation with a sufficiently high preload, the gasket prevents preload loss due to deformation and creep. Residual elastic force according to GB/T 94.4
Can be used as a gasket for initial performance evaluation. Under lateral load, the loosening performance cannot be guaranteed, so it is only used for short bolts that mainly bear axial loads.

Basic Data

Standard ID	GB/T 9074.31-2017 (GB/T9074.31-2017)
Description (Translated English)	Conical spring washers for assemblies
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J13
Classification of International Standard	21.060.30
Word Count Estimation	6,676
Date of Issue	2017-12-29
Date of Implementation	2018-04-01
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China