Overview
| brand | Cantonese snail | Nominal diameter | ten |
| length | twenty | material quality | Carbon steel 33H |
| Applicable scope | Military specific fasteners | producing area | Dongguan |
| colour | silvery | Functional purpose | |
| Packaging specifications | one thousand and two hundred | model | M10 * 20 |
| Customized or not | no | Order number | Yue Luo-132 6870 6820 |
| Standard type | Japanese standard | Delivery time | Within 48 hours |
| Performance level | Grade 8.8 | Material grade | Carbon steel grade 12.9 |
Product Details
At present, cylindrical pin press installation mostly involves placing the product at the positioning position of the lower mold, and then placing a cylindrical pin into a cylindrical pin positioning hole that is concentric and perpendicular to the hole pressed into the product, or placing it on the product, requiring the pin to have a positioning guide; Or fix it above the pressure head so that it does not fall, and then press it in to complete. In fact, it is also difficult to press in small cylindrical pins. To ensure the good quality of the product, accurate positioning is required, ensuring that the cylindrical pins are concentric and vertical, and the cylindrical pins are placed one by one. Workers are prone to fatigue during production, and efficiency is low. Product quality control is affected by many human factors, resulting in unstable product quality and certain safety hazards in work. On the other hand, some production lines have expensive workstations for pressing cylindrical pins, such as finger cylinders and moving mechanisms, which can put significant cost pressure on the equipment investment of small and micro enterprises.
Two combination screws are also known as two combination screws. As the name suggests, it means a screw with a spring washer or only a flat washer. After being twisted and combined together, it is a two piece assembly. There are two types of combination screws: iron and stainless steel. For iron, there are screw wires such as 10101018 and 10B21. Generally, iron blocks require electroplating, which can be divided into environmentally friendly and ordinary types. For example, there are environmentally friendly color zinc, environmentally friendly blue zinc, white zinc, color zinc, white nickel and other electroplating options. Stainless steel two combination screws. The material is stainless steel 304.
A screw is a tool that utilizes the physical and mathematical principles of the oblique circular rotation and friction of an object to gradually tighten the mechanical components of the object. Drill tail screws are screws with a self tapping drilling head at the front end of the screw. The screw has been a common invention in people's production and life for thousands of years, and according to its application field, it is the first great invention of humanity. Drill tail screws are a new invention in recent years, also known as self drilling screws. Screws are a common term for fasteners, commonly used in everyday language.
"The annotation format for thread markings is:
Thread code - Thread tolerance zone code (pitch diameter, top diameter) - Thread length
l) The tolerance zone code is represented by numbers and letters (upper case letters for internal threads and Minuscule for external threads), such as 7H, 6g, etc. It should be noted that 7H, 6g, etc. represent thread tolerances, while H7, g6 represent cylinder tolerance codes.
2) The rotation length is specified as short (represented by S), medium (represented by N), and long (represented by L). In general, the thread fitting length is not indicated, and the thread tolerance zone is determined based on the moderate fitting length (N). If necessary, the screw length code S or L can be added, such as "M20-5g6g-L". When special needs arise, the numerical value of the spinning length can be indicated, such as "M20-5g6g-30""
The bolt material is 18Cr2Ni4W and 25Cr2MoV steel; Bolt specifications: M27~M48. Due to the tendency of this type of steel to form a passivation film on the surface, which prevents the bolt from obtaining a chemical nickel phosphorus layer with good adhesion, special pre-treatment measures must be taken to remove the film first, and measures should be taken to prevent its regeneration in order to ensure good adhesion between the plated coating and the substrate. At the same time, due to the large geometric size of the bolt, it increases the difficulty of nickel phosphorus plating treatment and quality inspection during the process.
