Qi Sheng weld nuts are designed to be welded onto metal components to create a permanent threaded attachment point. They are frequently used in sheet metal fabrication, frames, brackets, and automotive/industrial parts where repeatable assembly and strength are required.
We can supply weld nuts in multiple styles and sizes with material options to suit welding processes and end-use requirements. For OEM buyers, we support specification-based sourcing and bulk packaging.
Send your required style, thread size, base material details, quantity, and any standard requirement for a quotation.

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Hexagon weld nut for secure welding and fastening in mechanical assemblies.
High-quality hexagon weld nut for secure fastening.

Hexagon Weld Nut

  1. Complies with ISO 14544, DIN 929, ANSI B18.2.4.2M; permanent welding-type locking fasteners
  2. Material: Carbon steel (45#), alloy steel (42CrMo), stainless steel (304); strength grades 4.8–12.9
  3. Structure: Hexagonal body + welding boss/groove (for solder penetration) + internal coarse/fine thread
  4. Surface treatments: Black oxide, pickling (pre-welding), zinc plating (post-welding)
  5. Size M3–M36 (matches standard bolts)
Square Weld Nut
Set of three square weld nuts for secure fastening in mechanical and hardware projects.

Square Weld Nut

  1. Permanent anti-rotation welding fasteners
  2. Material: Carbon steel (45#), stainless steel (304), alloy steel (42CrMo); strength grades 4.8–12.9
  3. Structure: Square body + welding boss/groove (for solder penetration) + internal coarse/fine thread
  4. Surface treatments: Black oxide, pickling (pre-welding), zinc plating (post-welding)
  5. Size M3–M36 (matches standard bolts)