Standards and Processes for the Use of Welding Square Nuts

Welding Square Nuts are primarily used in industries such as automotive and machinery. What are the standards and processes for the use of welding square nuts? Let's take a look at the standards and processes for the use of welding square nuts below.

Purpose of Welding Square Nuts:

Welding Square Nuts are mainly used in industries such as automotive and machinery.

English Name: Square weld nuts

Standards for Welding Square Nuts:

1. 1. Scope

This standard specifies the types, dimensions, requirements, and marking of square weld nuts with thread sizes ranging from M4 to M12.

This standard applies to the welding square nuts used in the Changan series of microcars.

1. 1. Referenced Standards

The clauses included in the following standards are incorporated into this standard by reference and constitute provisions of this standard. At the time of publication, the versions shown are all valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards.

GB 90—85 Fasteners acceptance inspection - Marking and packaging

GB 196—81 General purpose metric screw threads - Basic dimensions (diameters 1~600mm)

GB 197—81 General purpose metric screw threads - Tolerances and fits (diameters 1~355mm)

GB 699—88 High quality carbon structural steel

GB 1237—88 Marking method for fasteners

GB 3098.2—82 Mechanical properties of fasteners - Nuts

GB 3098.4—86 Mechanical properties of fasteners - Fine pitch nuts

GB 3103.1—82 Tolerances for fasteners - Bolts, screws, and nuts

GB 5779.2—86 Surface defects of fasteners - General requirements for nuts

JB 3608—84 Welding hexagon nuts

Manufacturing Process of Welding Square Nuts:

General steps: Wire rod - Pickling - Cold drawing - Cold heading. Considering its weldability, SWRCH10K or SWRCH15K is commonly used.

What welding method is used for welding square nuts?

Manual electric welding is usually used, but the downside is that the weld points are not aesthetically pleasing; it is recommended to use "weld nuts," which are usually hexagonal rather than square; spot welding with a spot welder provides a strong and aesthetically pleasing weld.