Fastener screws need to be inspected before or after production before they can be formally put into use. Therefore, in order to get better use effect of fastener screws, we must be careful and careful when carrying out these inspections. According to the summary experience, China Standard Parts Net

Fasteners are a kind of mechanical parts used for fastening and connecting. Fasteners are widely used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic and so on. A wide variety of fasteners can be seen in a

Anchor bolt are commonly known as metal anchor bolt. The fixing principle of anchor bolt is to use the wedge Angle to promote the expansion to produce friction gripping force to achieve a fixed effect. Generally speaking, after the anchor bolt is hit into the hole on the ground or wall, the wrench i

01 Advantages of cold headingHigh utilization rate of steel: cold heading (extrusion) is a kind of less, no cutting processing method, such as processing rods hex head bolts, cylindrical head hex screws, using the cutting method, steel utilization rate is only 25% ~ 35%, and with cold heading (extru

Touch inspection of stamping partsWipe the surface of the outer covering with clean gauze. The inspector should wear touching gloves and touch the stamping parts lengthwise close to the surface of the stamping parts. This inspection method depends on the inspector's experience. If necessary, the sus

Countersunk head screw is also known as flat machine screw, flat head screw, its head is a 90 degree cone, the mounting hole surface on the connector is also processed with a 90 degree cone socket, so as to ensure that the screw head and connector surface parallel, for the surface can allow a little