Welcome to Quanfanbolt – Your Reliable Bolt, Nut & Screw Manufacturer in China!

We are a professional fastener factory specializing in the production and export of high-quality bolts, nuts, screws, and custom fasteners.

Our Products

  • • Hex Bolts (DIN933, DIN931, ASTM A325, A490)
  • • Nuts (DIN934, flange nuts, heavy hex nuts)
  • • Self-tapping Screws, Machine Screws
  • • Custom fasteners for solar mounting, construction, machinery, and more

Cheap Screws & Fasteners Direct from Factory | Quanfan Manufacturing Process

a screw manufacturer based in China. We focus on **stable supply**, **customization**, and **factory-direct pricing* — without the middleman.

ALL product