The function of the dowel is to position and fasten the parts; It comes in two types: cylindrical and conical. The installation of the pin generally adopts the pressing method or the soft metal knocking in two methods. A small, usually conical, pointed, or peaked piece of wood or metal used to fasten or fasten (boards, tiles, soles, uppers, furniture molding, and components) or to mend holes.

In the sales of products, cylindrical pins, conical pins and cotter pins are the production of a wide range of commercial fasteners, but also irreplaceable fastener products. Pins play an important role in the connection of mechanical parts. According to the different shape and function, it can be divided into: cotter pin, conical pin, cylindrical pin, slot pin and so on.

• Appearance: Smooth surface, coated with anti-rust oil, smooth chamfer, no burrs. The surface shall not have black skin, cracks, folds, inclusions.
• Size: According to the drawing or sealed sample inspection.
• Surface roughness: Surface roughness is not more than 3.2.
• Hardness: According to the requirements of the drawing or sealed sample inspection.
• Thread: Screw with the nut into the shaft thread end should be moderate tightness.
• Rust test: With 10% salt water test does not rust. Hair width greater than 0.4mm according to crack treatment; Longitudinal hairlines permitted on the surface of the motor shaft; The magnetic trace display length of a single hair stripe is not more than 4mm; The number of hair lines allowed on the same section is not more than 5. Defects with magnetic marks showing a total length of less than 2mm are not counted.

• Easy to clean: The surface is smooth and easy to clean, effectively preventing food residues, dirt, and microorganisms from adhering.
• Non-magnetic: In their annealed state, both are non-magnetic, which is beneficial for products requiring low magnetic properties.
• Good high-temperature performance: Offers better strength and oxidation resistance at high temperatures compared to the 304 series.
• Excellent corrosion resistance: Contains 2-3% molybdenum, giving stronger corrosion resistance, especially in chloride environments.
• Low carbon content (316L): Carbon content of less than 0.03%, reducing the risk of intergranular corrosion after welding.