Stainless steel screw is called "industrial meter", although small but has a large use, and naturally rich types. Stainless steel screws have strong rust prevention and corrosion-resistant performance. They are widely used in outdoor and rain prone places and various application and living scenarios. How should users choose such a variety of stainless steel screws when using it, What types of stainless steel screws are available
201 stainless steel screw
Material grade: 17cr-4.5ni-6mn-n; However, 201 materials in domestic market generally fail to meet this standard. By default, it refers to ordinary stainless steel materials, with nickel content less than 1%, which is used in places with low requirements for rust resistance, such as indoor non-contact with water, the price is also the lowest, which is equivalent to half of the price of 304 materials.
304 stainless steel screw
Element content: carbon C: ＜ 0.08, silicon Si: ≤ 1.00, cr:18.00-20.00, manganese Mn: ≤ 2.00, ni:8.00-11.0, P: < 0.045, sulfur s: ＜ 0.030, in which, if the detection is authentic 304, nickel is the most important element. As long as nickel element is more than 8%, then we can conclude that it is made of 304. 304 is the most commonly used stainless steel screw.
316 stainless steel screw
Material grade: 06cr17ni12mo2, corrosion resistance is better than 304 stainless steel, and has good corrosion resistance in the process of use. And 316 stainless steel is also resistant to marine and corrosive industrial atmosphere. The price is also much higher than the first two.
Stainless steel screws can be divided into cylinder head, semi countersunk head, counterhead, pan head, large flat head and hexagon head, etc. stainless steel screw of pan head will protrude on the surface of the connected object after installation, and generally, this product will be seen on the host products with small size such as household appliances; The stainless steel screw with countersunk head will not protrude from the surface of the product after screwing into the product, which is mostly used for the external of the product; The stainless steel screw with cylindrical head is similar to the countersunk head, and the head of the screw will be embedded in the machine parts; The head of the stainless steel screw with large flat head is larger than that of the pan head screw, and the force area is larger. The product is not easy to damage at the screw connection, and it is mostly used between plastic parts; The stainless steel screw with hexagon head is easy to fasten, dismantle and not slide, and is often used in machinery.
Stainless steel screws can be divided into cross groove, hexagonal groove, slotted slot, plum groove and so on. Cross groove screw is common in daily life. Compared with the hexagon stainless steel screw, it has strong universality. However, due to the less force point, it is easy to slide the wire. The hexagon screw is commonly used in the machine, which is mainly convenient for fastening, disassembly and not easy to slide angle.
