nut

Nuts also called nuts, nut there are many types generally have hexagonal nut, there is a round nut, square nut and so on. For some of the standard nut is quite clear. Some standard sizes, materials required standard, electroplating standards are relatively clear. And different types of nuts have different standards, there is a detailed description about the nut specifications and standards.http://sgelec.en.alibaba.com/
Hex nuts and screws, bolts, screws relative to the mating use mechanical fastening the connecting role. Which after a type six most widely used nuts, C-level nut for rough surface, less precision machinery, equipment or structures; A and Class B surface is smooth nut for the high precision machinery, equipment or structures. 2 M-type hexagonal nut thickness thicker, more often often required for assembly and disassembly of the occasion. Hexagon thin nuts M thin thickness, used for parts of the surface are connected space is limited occasions.http://www.aliexpress.com/store/502733


For hex nut, commonly used standards: GB52, GB6170, GB6172 and DIN934, for the main difference between them: GB6170 thickness than the GB52, GB6172 and DIN934 come thick, commonly known as the thick nut. The other is on the edge of the distinction, M8 nut series DIN934, GB6170, GB6172 are on the opposite side of the right side 13MM 14MM than GB52 smaller 1MM, M10 nut, DIN934 with GB52 opposite side of 17MM, than GB6170 and GB6172's right side to a large 1MM, M12 nut, DIN934, GB52 19MM than on the opposite side to the right side of GB6170 and GB6172 18MM larger 1MM. For the M14 nut, DIN934, GB52 22MM than on the opposite side to the right side of GB6170 and GB6172 21MM larger 1MM. The other is the M22 nut, DIN934, GB52 the right side for the 32MM, than GB6170, GB6172 opposite side 34MM smaller 2MM. (GB6170 and GB6172 addition to its thickness is not the same, the same as the width of the edge) remaining specifications without considering the thickness of the case can be common.
Inner hexagon, the GB has two versions, one for GB70-76, 76 years versions, one for the GB70-85, 85 years version, so the actual business operation should note the difference: where GB70-85 completely overlap with DIN912 Therefore, the case for the use of new targets, there is no significant difference, mainly GB70-76 and the distinction between DIN912: M8 Hexagon series products, GB70-76's round diameter 12.5MM, compared to the DIN912 13.27MM smaller, M10 series Hexagon products, GB70-76's round diameter 15MM, smaller than some of the DIN912 16.27, M12 series Hex, GB70-76's round diameter 18MM, on the opposite side than DIN912 18.27 to be smaller, and the other like M16, M20 Series Hexagon GB70-76's round diameter is smaller than DIN912 0.33MM, respectively, 24MM, 30MM. The DIN912 respectively 24.33MM and 30.33MM. Another old standard with the German standard Hexagon width between the inner right side of the standard varies, GB70-76 within the right side to be smaller, in the business operations should also be noted.https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl
In addition, usually the carriage bolts may be used, there are some differences, but also to make a statement on this, in GB, there are two carriage bolts standard, that GB12 (Cup head square neck screws) and GB14 (Mushroom head square neck screws), usually there are more commonly used in the market DIN standard DIN603. Now distinguish between these three: For round neck, when compared in the same specification is: GB12. Usually in the carriage bolts are used, often require large, thick neck, so DIN603 carriage bolts fully meet the requirements of the standard.
Name:
1 machine screws 2. Tapping screws 3. Drilling screws 4. Wallboard nails 5. Chipboard screws 6 wood screws 7. Hexagonal wood screws 8 screws with 9. Combination screw 10. Micro screw 11. Furniture screws 12 Electronic screw
Head type:
1 hexagon (hexagon head) 2. Hex head flange (hexagon head with flange) 3. Square head (square head) 4.T shaped head T head (hammer head) 5. Oval head mushroom head (truss head ) 6. cylinder head (cheese head) 7. round (round head) 8. pan head (pan head) 9. countersunk head countersunk head (flat head) 10. countersunk head raised countersunk head (oval
Groove:
1 Philip 2 October / word 3 word 4 within the triangle 5. Angles Quartet 6 Cross 7 Torx 8 Flower 9. Quincunx 10 flower-shaped word 11. Specially shaped 12. Hexagonhttp://www.aliexpress.com/store/502733

Generally, we must first of fine and coarse teeth tooth cap nut, but in fact no matter what fine teeth, coarse teeth, their specifications are the same, their specifications are M3, M4, M5, M6, M8, M10, etc. . But there is a kind of watched British, American and hex nuts, this is only the national standard has been different. We produced in China, known as GB hex nut.http://www.aliexpress.com/store/502733

There are two kinds, one is iron, which is carbon steel. One is of stainless steel, of course, copper, aluminum, nuts, but it is rarely used. How much copper is to be useful, like aluminum nut rarely used. Hex Nut level there are two, one is 4.8, ordinary nuts, one is 8 nut. More about the nut industry knowledge, read specifications table nut, the nut industry national standard tables. These nuts Specifications knowledge and industry standards. Allows us to have a better understanding on the nut.