Ningbo CQ Machining Co., Ltd.
|
Payment Terms: | T/T,L/C |
Place of Origin: | Zhejiang, China (Mainland) |
Add to My Favorites | |
HiSupplier Escrow |
Hex nuts (Hexagon nut) with bolts, screws with the use of mechanical fastening the connecting role. Type a hex nut which was the most widely used, C-level nut for rough surface on the machinery, equipment or structures less precision; A grade and B grade nut for surface is smooth, requiring high precision machinery, equipment or structure. Type 2 hex nut thickness m thick, and more often often required for assembly and disassembly of the occasion. Hexagon thin nut m thickness thinner, used to connect parts of the surface space is limited occasions.
Hex nuts
A nut having internal threads and fasteners used in conjunction with the bolt, the screw having an inner thread and with the use of motion transmission or power to mechanical parts.
Nut is a nut, bolt or screw fastening screw together to play the role of parts, an original all manufacturing machinery must be used.
Kind of nut variety, we have a common national standard, British standard, American standard, Japanese subject of nuts. nut according to different materials, into carbon steel, high strength steel, stainless steel, steel and other major types according to different product attributes corresponding national standard number is divided into ordinary, non-standard, (old) GB, the new national standard, American , English, German standard. Different sizes, ranging threaded into different specifications. General national standard, German standard represented by M (eg M8, M16), American, British is expressed as a fraction or # specifications (such as 8, # 10, 1/4, 3 / 8) fasteners, nuts are parts of machinery and equipment will be closely linked through threaded inside, the same size nuts and screws, can be connected together, for example, M4-0.7 only nut screw with M4-0.7 with ( In nut, M4 refers to the inner diameter of the nut is about 4mm, 0.7 refers to the distance between the two thread is 0.7mm); US-made products also, for example, 1/4-20 and 1/4-20 nut screw only with (1/4 refers to the nut inside diameter of about 0.25 inches, 20 inches each finger, there are 20 teeth)
Hex nuts and Hex screws
Hex nuts in accordance with the nominal thickness into type I, type II and thin three. 8 more nuts into type 1 and type II two types.
I type hex nut widest application, a nut is divided into A, B, C three, where Class A and Class B nuts applied to the surface roughness is small, the high requirements for precision machinery, equipment and structures, and C grade nut is used to rough surface on the machinery, equipment or structures less precision; Type 2 relatively thick hexagonal nut, is used in situations often require disassembly.
Type 1 refers to a nut nut nominal height m ≥ 0.8D ordinary hex nut, which shall comply with GB/T6170 type of size;
The height of type 2 than type 1 nut nut to its type size should be consistent with GB/T6175. Nut increasing type 2 has two purposes: first, to obtain a heat-treated by the need to increase the height of the nut, the nut is relatively low.
Because D ≤ M16's 8 1 nut without heat treatment, so in eight nuts, only D> M16 ~ 39 specifications only with type 2 nuts,
Clearly not a nut-type heat treatment can not reach the nut 9 mechanical requirements. Get tougher nut requirement of 12 is another object of type 2 nuts. Since the height of the nut increases, the lower the hardness of the quenched and tempered to achieve proof stress index, the toughness of the nut increases.
Pitch by category: standard teeth, regular teeth, fine teeth, fine teeth and counter teeth.
Material Category: Stainless steel hex nuts and hex nuts, hex nuts copper, iron hex nuts.
Classification according to thickness: thick hexagon nuts and hexagon thin nuts.
By using the method of classification: melt copper nuts, hot brass nut, brass nut and ultrasonic embedded copper nuts
Production material: 40CR, 45 steel, 35K, stainless steel, Q235 (A3 steel), such as hardness grade: 4 5 6 8 10 12
As a standard, it should have its own general specifications
For hexagonal nut, common standards: GB52, GB6170, GB6172 and DIN934, the main difference between them are: GB6170 thickness than GB52, GB6172 and DIN934 come thick, commonly known as thick nut. The other is on the edge of distinction, M8 nut series DIN934, GB6170, GB6172 are on opposite sides of the edge GB52 13MM 14MM than smaller 1MM, M10 nuts, DIN934 and GB52 on the edge of 17MM, compared on the side of larger 1MM GB6170 and GB6172's, M12 nut, DIN934, GB52 on the side for the side 1MM 19MM 18MM larger than the GB6170 and GB6172. For M14 nut, DIN934, GB52 on the edge of GB6170 and GB6172 22MM than on opposite sides of 21MM larger 1MM. The other is the M22 nut, DIN934, GB52 on the edge of 32MM, than GB6170, GB6172 on the smaller side 34MM 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.
Nonstandard hex nuts
An ordinary hex - used widely, is characterized by the tightening force is relatively large, the disadvantage is to have enough working space during installation, you can use the installation wrench, spanner wrench or glasses, need a lot more than a wrench operating space.
2, the cylinder head Hexagon - is the most widely used of all the screws, because it is relatively large tightening force, using an Allen wrench can operate when the installation is very easy to use in almost all kinds of structure, appearance more beautiful and neat, The disadvantage is that the tightening force is slightly lower than 2.60, and repeated use another cause can not be easily damaged hex demolition.
3, the pan head Allen - rarely used on machinery, mechanical properties above, mostly used in the furniture, the main role is to increase the contact surface with the wooden materials and increase the appearance of ornamental.
4, the headless hex - must be used on certain structures, such as the need top tight top wire great force structure, or need a place to hide the cylinder head.
5, countersunk hex - mostly used in power machinery, the same major role with hex.
6, nylon lock nuts - hexagonal mosaic nylon apron in flour to prevent loosening of the screw structure, mechanical strength power.
7, flange nuts - mainly serve to increase the role of contact with the workpiece surface, mostly used in pipes, fasteners have been a number of stampings and castings.
8, ordinary hex nuts - the most widely used, but also one of the most common general fasteners.
Hex nut Specifications
Thread size | Edge distance MM | Height MM | Circumcircle diameter | Each 1000 pcs /KG | ||
Nominal size | Tolerances | Nominal size | Tolerances | |||
M16 | 3.2 | -0.16 | 1.3 | 0.2 | 3.7 | 0.075 |
M2 | 4 | 1.6 | 4.6 | 0.119 | ||
M2.5 | 5 | 2 | 5.8 | 0.22 | ||
M3 | 5.5 | 2.4 | 6.3 | 0.393 | ||
M4 | 7 | -0.2 | 3.2 | 0.24 | 8.1 | 0.844 |
M5 | 8 | 4 | 9.2 | 1.24 | ||
M6 | 10 | 5 | 11.5 | 2.317 | ||
M8 | 14 | -0.24 | 6 | 16.2 | 5.674 | |
M10 | 17 | 8 | 0.29 | 19.6 | 10.99 | |
M12 | 19 | -0.28 | 10 | 21.9 | 16.32 | |
M14 | 22 | 11 | 0.35 | 25.4 | 25.28 | |
M16 | 24 | 13 | 27.7 | 34.12 | ||
M18 | 27 | 14 | 31.2 | 44.19 | ||
M20 | 30 | -0.34 | 16 | 34.6 | 61.91 | |
M22 | 32 | 18 | 36.9 | 75.94 | ||
M24 | 36 | 19 | 0.5 | 41.6 | 111.9 | |
M27 | 41 | 22 | 47.3 | 168 | ||
M30 | 46 | -0.4 | 24 | 53.1 | 234.2 | |
M36 | 55 | 28 | 63.5 | 370.9 | ||
M42 | 65 | 32 | 75 | 598.6 | ||
M48 | 75 | 38 | 86.5 | 957.3 |
Our factory:
We can provide for you nonstandard nuts.pleased feel free to send us the drawing. we will quote the competitive price to you.
Welcome to visit our factory.