Products

Jiaxing Aoke Trading is a experienced manufacturer and exporter of flange bolts in China. Stainless steel DIN6921 hexagon head flange bolts are suitable for applications requiring high-strength sealing, such as piping systems and pressure vessels. Their dimensions strictly adhere to the German standard DIN6921. Their hexagonal head features a flanged surface (no serrations). This design maximizes contact area with the connected components and distributes pressure. Thread accuracy reaches 6g, enhancing overall connection strength. Compared to conventional hexagonal bolts, DIN6921 flange bolts eliminate the need for additional washers, achieving sealing and anti-loosening directly through the flange, simplifying assembly. DIN6921 hexagon head flange bolts are made of 304 stainless steel (18% chromium, 8% nickel) and 316L stainless steel (2%-3% molybdenum). The appropriate material can be selected based on the application.

Jiaxing aoke is a professional conical washers manufacturer and supplier in China, multiple sizes are available for your choice, you can rest assured to wholesale and customized stainless steel countersunk conical washer from our factory. The stainless steel countersunk conical washer is also called concave convex washer. It is an efficient and reliable sealing element in the industrial sealing field. It achieves precise positioning and high-pressure sealing through the design of concave and convex surfaces. The conical washer is solid, with a "fish-eye" depression in the middle and a conical outer ring, forming a unique appearance. The fully automatic production process ensures product quality in one step. The countersunk conical washer can provide stable support and shock absorption. Made of high-quality stainless steel 304/316, the concave convex conical washers can effectively prevent corrosion and oxidation due to long-term use.

Jiaxing Aoke hardware is one of the professional DIN6796 conical spring washer manufacturer and supplier in China. Our factory is ISO9001 certified and have in stock of factory. The DIN6796 conical spring washer is strictly manufactured in accordance with the German industrial standard DIN6796, with the conical shape being the core design feature. The washer as a whole is conical in shape, with a height higher than that of a regular flat washer. During assembly, it is compressed by the pre-tightening force of the bolt, generating elasticity, which counteracts the loosening of the thread caused by vibration and temperature differences. Compared to the ordinary spring washer, the load capacity of DIN6796 is increased by 300%; compared to the DIN2093 disc spring, DIN6796 extends the dynamic fatigue life by 50% through the optimized design of the cone angle. These technical characteristics make it irreplaceable in 8.8, 10.9, 12.9 grade high-strength bolt connections and are widely used in fields with strict safety requirements such as aviation, automotive manufacturing, and rail transportation.

Jiaxing Aoke hardware as the professional manufacturer in China, we would like to supply you conical washers. NFE25511 French anti-loose conical washers, also known as CS washer, NFE 25511 conical contact washer or spring disc washer. The surface is knurled, the core of its design is the conical structure and knurled surface. The conical structure of the washer generates elastic counterforces during the tightening of the bolt, and reducing the risk of loosening caused by material settlement. The knurled surface of the NFE 25511 French anti-loose conical washer increases the friction coefficient, preventing thread loosening due to vibration or thermal expansion and contraction. NFE25511 French-type washers come in three specifications: Z-type (narrow), M-type (medium), and L-type (wide). AOKE produces M3-M20, in various carbon steel grades such as Mn65 and stainless steel grades such as SUS304 (1.4301) and SUS316 (1.4401). The stainless steel material undergoes austenitic hardening to achieve the required mechanical properties and hardness.

Jiaxing Aoke Handware is a professional set screws manufacturer in China. This set screw is made of stainless steel and features a flat head design with clear threads for a tight connection to the part being joined. The hexagonal recess can be used with a hexagonal wrench, which has a strong torque and will not slip the corners when operating. It can provide you with strong positioning and fixing functions. If you happen to need this stainless steel hexagon socket set screws, please contact us, we will offer you the best quality and competitive price.

Jiaxing Aoke Hardware is a professional supplier and manufacturer of solar roof hooks in China. Our solar PV roof hooks type S are specialized brackets designed for placing, mounting and securing solar panels in solar PV power systems. We use high quality, corrosion-resistant materials to produce solar hooks with very excellent performance and durability even in extreme weather. We support materials of SS304 and SS430, and its dimensions are 470*30*4 (mm, L*W*T) and 470*30*5 (mm, L*W*T), and its length can be varied up to 530 mm.If you are willing to purchase, please contact us, Aoke's solar roof hoof will be your best choice. We will provide you with competitive quality and price!