Why do some people like snow so much? White flawless snow covered the top of the earth, clean and pure as if the impetuous mind also followed down. Therefore, the white is really synonymous with beauty and purity, the most beautiful princess is called "Snow White," Xiao Bian believe that each girl has a white wedding heart, a delicate wedding. The wedding dress and wedding dress will be for you, but now how can you have a white dress in your closet? With the small series straight silk can be women .
Shoulder to the hand lotus leaf design is very characteristic, adds a sense of handsome, and the central hollow carved hollow design, but also pulled back the feeling of a small woman, A word skirt version plus knee length, waist was thin Was thin legs, very special eye-catching a dress.
The whole lace hollow design, just awakened every girl's princess dream, small harness and primer skirt and lace together to create a perspective effect, sweet lady at the same time, there is a bit sexy, is this year's big money. Small make up can not help but call, it is so beautiful it!
A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination of their threads' friction (with slight elastic deformation), a slight stretching of the bolt, and compression of the parts to be held together.
In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: lock washers, jam nuts, specialist adhesive thread-locking fluid such as Loctite, safety pins (split pins) or lockwire in conjunction with castellated nuts, nylon inserts (nyloc nut), or slightly oval-shaped threads.
Square nuts, as well as bolt heads, were the first shape made and used to be the most common largely because they were much easier to manufacture, especially by hand. While rare today[when?] due to the reasons stated below for the preference of hexagonal nuts, they are occasionally used in some situations when a maximum amount of torque and grip is needed for a given size: the greater length of each side allows a spanner to be applied with a larger surface area and more leverage at the nut.
The most common shape today is hexagonal, for similar reasons as the bolt head: six sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. It takes only one sixth of a rotation to obtain the next side of the hexagon and grip is optimal. However, polygons with more than six sides do not give the requisite grip and polygons with fewer than six sides take more time to be given a complete rotation. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts (e.g. cage nuts) for inaccessible areas.
A wide variety of nuts exists, from household hardware versions to specialized industry-specific designs that are engineered to meet various technical standards. Fasteners used in automotive, engineering, and industrial applications usually need to be tightened to a specific torque setting, using a torque wrench. Nuts are graded with strength ratings compatible with their respective Bolts; for example, an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property class 10.9 bolt without stripping. Likewise, an SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on.
Barrel nuts, Cage nuts, Flange nuts
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