Flanged Hex Head Bolts Flange Hexagon Screws, Stainless Steel A2, DIN 6921

Fasteners are everywhere in our daily life and work, and they play an important role in connection and fixing. Common fasteners may be made of different materials, each with its own unique characteristics and uses. Let’s uncover the secrets behind the different materials of these common fasteners and explore their mysteries. Stainless steel fasteners: strong […]

Bolts are a common fastener widely used in machinery, construction, automobiles and other fields. Correct selection and installation of bolts is essential to ensure the operation of equipment. This article will introduce how to correctly select and install bolts. 1. Select bolts Material selection The material of the bolts should be selected according to the […]

Several heat treatment methods are introduced   We all know that there will be multiple processing heat treatment, so what heat treatment may be used in the following, we briefly describe several heat treatment concepts for you. 1. Normalizing: Heating steel or steel parts to a critical temperature for a period of time and then […]

The bolts made of stainless steel are rusty when the heat exchanger is normally operating at 1000°F(about 283°C)! Why is that? Originally, at higher temperatures, thermal cycling will make some stainless steel into non-stainless steel. Therefore, the choice of fastener material must be careful to avoid accidents. Stainless steel background: By definition, stainless steel should […]

Destructive torque of austenitic stainless steel bolts and screws                                                                                             […]

Standard specifications and uses DIN912 hexagon screws are also partially suitable for GB70. DIN912 stainless steel socket head screw shape is round, also known as the cylinder head hex socket screws, the middle is hollow hexagonal. The head is knurled, and there is no knurled. Hexagon screws with cylindrical heads are the most commonly used […]