Overview
| brand | Cantonese snail | Nominal diameter | twenty-four |
| length | two hundred | material quality | Stainless steel A250 |
| Applicable scope | Fasteners for sheet installation | producing area | Zhaoqing |
| colour | black | Functional purpose | |
| Packaging specifications | three hundred | model | M24 * 200 |
| Customized or not | no | Order number | Yue Luo-132 6870 6820-15369 |
| Standard type | Non-standard | Delivery time | Within 24 hours |
| Performance level | Level 9.8 | Material grade | Stainless steel A150 |
Product Details
Today's advanced manufacturing represented by large aircraft, large power generation equipment, automobiles, high-speed trains, large ships, and large complete sets of equipment has entered an important development direction. As a result, fasteners will enter an important stage of development. High strength bolts are used for the connection of important machinery, and repeated disassembly or various installation torque methods require extremely high requirements for high strength bolts. Therefore, the quality of its surface condition and thread accuracy will directly affect the service life and safety of the host. In order to improve the friction coefficient and avoid rusting, seizing, or jamming during use, the technical requirements stipulate that the surface should be treated with nickel phosphorus plating. The coating thickness should be ensured to be within the range of 0.02~0.03mm, with uniform, dense, and no pinholes.
"Standards are norms, and each country and department has its own standards. GB - Chinese National Standard (National Standard) ANSI - American National Standard (American Standard)
DIN German National Standard (DIN) ASME American Society of Mechanical Engineers
JIS - Japanese National Standard (Japanese Standard) BSW - British National Standard
GB - National standard is one of the numerous standards in China, as well as industry standards, professional standards, and departmental standards. National standards are further divided into GB (mandatory standard), GB/T (recommended standard), and GBn (national internal standard). We usually see mandatory standards such as GB30, GB5783, and so on.
The above standards, apart from differences in basic dimensions such as head to edge, head thickness, etc., are mainly based on differences in threaded parts. GB, DIN, JIS, and other threads are all measured in millimeters, collectively referred to as metric threads. Threads such as ANSI and ASME are called American standard threads in inches. In addition to metric and American threads, there is also a BSW British standard, which also has threads in inches, commonly known as Wyeth threads.
In our daily domestic sales business, the most common standards we encounter are GB (national standard) and DIN (German standard).
In terms of producing products, we mainly come into contact with the following standards: GB30; GB5783; GB5782; GB52; GB6170; GB818; GB819; GB845; GB846; GB70; DIN912; DIN933; DIN931 et al. GB30 (old national standard) has been replaced by GB5783 (new national standard) in the standard book. GB52 (old national standard) has been replaced by GB6170 (new national standard) in the standard book"
"Screws can be classified by name
Machine screws, self tapping screws, drilling screws, wall panel screws, fiberboard screws, wood screws, hexagonal wood screws, non release screws, combination screws, miniature screws, furniture screws, electronic screws
According to head type, it can be divided into
1. Hexagon head 2. Hexagon head with flange 3. Square head 4. T-head T head (hammer head) 5. Flat round head Mushroom head (truss head) 6. Cheese head 7. Round head 8. Pan head 9. Countersink head (flat head) 10. Raised countersink head (oval
According to the groove type, it can be divided into
1. Philip 2. Ten/One word 3. One word 4. Inner triangle 5. Four corners 6. Cross 7. Metre 8. Flower 9. Quincunx 10. Flower one word 11. Special shape 12. Inner hexagon"
