Who We Are?

ASUDA is a leading manufacturer and distributor of high-quality fasteners. We specialize in producing a wide range of products, including bolts, screws, nuts, washers, and other related hardware items and Standard including DIN GB JIS ASME/ANSI ISO and others customer made products.

  • Machine Screws, Set Screws, Self Tapping Screws, Bolts, Nuts, Customers Made Fasteners…
  • Standard including: DIN | GB | ANIS | JIS | NONE STADNARD
  • Material: Stainless Steel 304 (A2) | Stainless Steel 316 (A4) | Stainless 410 | Carbon Steel | Alloy Steel


  • We produce  most commen used standard fastener products and also we help people pruchase some screw we do not produce.

  • The normal lead time of our stocked products is 1 week, after everyting confirmed.

    For the products out of stock and we need reproduce, the lead time will be 30 days after everyting confirmed.

  • We provide several packing for our customer choise.

    1, Box packing and 12 to 24 boxes in one carton

    2,Plastic bags and 6 bags in one carton.

    3,Woven bags and each bag weight will be less than 35KGS.

    For bulk order we will put all packed good on wooden pallet.

  • For bulk order:

    Our offer usually is FOB Chinese Ningbo Port or Wenzhou port.

    For Small order:

    Our price will be seperated to products cost and delivery cost.

    Payment :

    For bulk order we accpet T/T payment 30% as deposite and 70% against documents copy or L/C at sight.

    For small quanitty we offer paypal payment  or T/T 100% before delivery.

Contact Us

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Stainless Steel Fastener How to Choose Right Mateiral

Choosing the correct material is crucial for ensuring the performance and durability of stainless steel fasteners. Here are some guiding principles that can help you make wise decisions when choosing stainless steel fastener materials: Understanding application requirements: Firstly, it is necessary to understand the application requirements of fasteners. For example, what type of environment will fasteners be used in, what kind of loads and stresses they need to withstand, and what requirements they have for corrosion and wear.   Choose the appropriate...

Cold heading process and accuracy method for fasteners

fastener work shop
Cold heading is a forging method that uses a mold to upset metal bars at room temperature, usually used to manufacture the heads of screws, bolts, rivets, etc. It can reduce or replace cutting processing. Forging materials can be copper, aluminum, carbon steel, alloy steel, stainless steel, and titanium alloy. Cold heading is often carried out on specialized cold heading machines, facilitating continuous, multi-station, and automated production. On a cold heading machine, it is possible to sequentially complete processes...

Development process of stainless steel fasteners

DIN 7991
Stainless steel is a new type of metal material invented in the early 19th century. The formation of chromium rich oxide film (passivation film) endows stainless steel with rust resistance and corrosion resistance. Therefore, after more than 100 years of development, stainless steel has been applied in various industries. With the emergence of stainless steel materials, stainless steel fasteners have also begun to be produced. The beauty, durability, and strong corrosion resistance of stainless steel fasteners enable them to be...