Screws are a commonly used hardware product in our lives and production. Because of the different environments in which they are used, their functions and shapes will also be different. Butterfly screws are a type of screw that are convenient for people to operate with their hands. They are named because their shape is like the wings of a butterfly. This article will briefly introduce the standard specifications of butterfly screws and their advantages!
1. Standard specifications
Butterfly screws are a less common type of screws, so they are also called special-shaped screws. According to the strength classification, there are grade 4.8, grade 8.8, grade 10.9, grade 12.9 fasteners, etc. The materials are divided into Q235, 35#, 45#, 40Cr, 35CrMoA, 30CrMo, 42CrMo, 20MnB, Q345B (16 manganese), 25Cr2MoV , SUS304, SUS316L and other stainless steel fasteners. Standards: National Standard (GB), (HG), (JB) (SH), German Standard (DIN), American Standard (ANSI), British Standard (BS), Japanese Standard (JIS) and International Standard (ISO).
2. Advantages
Generally, our common screw types require tools to be tightened. The butterfly-shaped design of the head increases the lateral stress surface, making hand twisting more efficient. Butterfly screws have excellent properties such as insulation, non-magnetic, corrosion resistance, beautiful appearance, and never rust. However, modified engineering plastics are comparable to metal in terms of strength and impact resistance. It is mainly used in equipment such as the display industry, white goods, brown goods, telecommunications and data communications, and the automotive industry that require both insulation and frequent disassembly and maintenance.
3. Material
The material of butterfly screws is also an important aspect that determines its function and use. Its main material is nylon 66, a crystalline engineering plastic. It is a material with high toughness, small friction coefficient, wear resistance and excellent self-lubricating properties. It also has good oil and chemical resistance, so it is suitable for use as mechanical materials; POM is a crystalline engineering plastic. It has balanced mechanical properties and excellent fatigue resistance, creep resistance, friction and wear properties and chemical resistance, so it can be used as a replacement material for metals.
The above is the relevant content about the standard specifications of butterfly screws. I hope it will be helpful to everyone!