2014 winter coats are popular, but this season's women's trend has become loose. The single product style should be simple and rich texture, can show a sense of high fashion. The trend is changing rapidly. This fall and winter epidemic is back to basics. Freckled candy-colored coats are rarely seen. Dark-colored oversize coats such as navy blue, chocolate brown, etc. are used with innersuits, trousers, and casual shoes.
A set screw, also known as a blind screw or a grub screw, is a type of screw generally used as a detent to secure an object within or against another object,[1] usually without using a nut (see Bolts compared with Screws). The most common examples are securing a pulley or gear to a shaft. Set screws are usually headless, meaning that the screw is fully threaded and has no head projecting past the thread's major diameter. If a set screw does have a head,[clarification needed] the thread will extend all the way to the head (whereas a bolt might have an unthreaded shank between the head and thread). A set screw is almost always driven with an internal-wrenching drive, such as a hex socket (Allen), star (Torx), square socket (Robertson), or a slot. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. It exerts compressional or clamping force through the bottom tip that projects through the hole.
Set screws appear with a variety of tip (point) types. The different shaped tips have different properties that engineers can utilize. If an engineer were to use a detent to ensure proper nesting of the screw, they might choose to use a cone point type of screw. One might often need to use a flat point when the screw must press perfectly flat against a surface. The most common type is the cup point. This type works well because the surface is rounded so that a small surface area is in contact, but it does not have extremely high stress at one point like that of a cone point. Durability studies show that the cup point offers superior resistance to wear while maintaining a strong grip.[3] Knurled cup points offer the added advantage of a locking action (similar to that of a serrated lock washer) that prevents the screws from working loose in high-vibration applications.[4]
Common points include the following:
Flat point
Domed point
Cone point
Cup point
Extended point (pilot point, dog point)
Knurled cup point
set screw, dog point set screw, cup point set screw, cone point set screw
FinExpress Precision Manufacturing(Dongguan) Co., Ltd , https://www.finexpresshardware.com