GB/T 3098.9-2002
Mechanical properties of fasteners--Prevailing torque type steel hexagon nuts

Be replaced

Standard No.

GB/T 3098.9-2002

Language

Chinese

Release Date

2002

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 3098.9-2010

GB/T 3098.19-2004

Lastest

GB/T 3098.9-2020

GB/T 3098.19-2004

Scope

This standard specifies the mechanical and working properties of the effective moment steel hexagonal lock nuts (including hexagonal flange surfaces) when tested at an ambient temperature of 10°C to 35°C. Performance may vary at higher or lower temperatures. Effective torque type lock nuts applicable to this standard: ——Thread diameter up to 39mm; ——Common thread conforming to GB/T 192; ——Conforming to the combination of diameter and pitch specified in GB/T 193; ——Conforming to GB/T 6H thread tolerance specified in 197; ——there are specified mechanical performance requirements; ——dimensions comply with the provisions of the product standards that reference this standard; ——the working temperature range of all metal nuts is -50℃～+300℃; — —The operating temperature range of non-metallic insert nuts is -50℃～+120℃¹⁾. This standard does not apply to special performance requirements, that is, special materials or higher coating performances are required: - weldability; - corrosion resistance; - performance requirements beyond the temperature range specified above. As the number of repeated uses increases, the performance of effective torque decreases. Nut users should consider the relationship between initial use performance and repeated use performance degradation.

GB/T 3098.9-2002 history

• 2020 GB/T 3098.9-2020 Mechanical properties of fasteners—Prevailing torque type steel nuts
• 2011 GB/T 3098.9-2010 Mechanical properties of fasteners.Prevailing torque type steel nuts
• 2002 GB/T 3098.9-2002 Mechanical properties of fasteners--Prevailing torque type steel hexagon nuts

GB/T 3098.9-2002 -All Parts