China wholesaler 25years China Factory OEM ODM /Customized PP/PC/PE/ABS/PVC/PS/Nylon Injection Molding/ Tooling Plastic Parts for Car/Auto/Tractor/Vehicle with Free Design Custom

Product Description

Guanyu Factory

Guanyu was established in HangZhou in 1997, started with plastic products wholesale business. With 20 years’ continuous efforts and devotion in developing designing and manufacturing storage products, the company has been successfully transformed into a national leading provider for material handling and storage solutions.


We offer the comprehensive storage solutions in the key segments of plastic containers, shelving and racking systems, storage bins, plastic pallets, dollies, workshop equipment and OEM services across all industries.


  • More than 23 years experience

  • Sell products to over 60 countries

  • 100% virgin materials

  • 3 years quality guarantee(for non-human factor damages)


Description of Plastic Injection Mold
Mould material P20, H13, 718, etc.
Type Injection Mold
Certificate ISO9001
Cavity single/multi
Runner Hot/ Cold
Mould life 30,0000-1,000,000shots
Plastic material PP, PE, PS, PU, ABS, PVC etc.
Delivery time 45-50days
Package for Mold Wooden Case
Package for Plastic Products Standard Export Packing
Loading Port HangZhou



Available for your brand, we will open exclusive molds for OEM production.

can be customized according to the samples you provide

can be customized according to the size you provide

you can use your outer packaging carton, the inner product of me to complete the production



1.Manufacturing enterprise

2.The plastics industry has 20 years of manufacturing experience

3.The company has a good reputation and protects your brand image to the utmost extent.

4.A high-level design team with an average working time of more than 7 years provides technical support.

5.Can provide you with the most convenient logistics and transportation solutions, and provide sewing service

6.There is a complete set of strict quality control system from plastic raw materials to finished products. The original package Exxon Mobil PP polyethylene is used as raw material, with short cycle time and high production efficiency, which achieves an excellent balance between product rigidity and impact resistance.

7.A group of skilled workers with more than 3 years of experience can improve production efficiency and save raw materials to reduce costs. 8. Can be customized for various screen printing, lettering, thermoprint Logo

*So when you need a precision machined tool to produce plastic component but you do not have the resources to manufacture it, please contact with us. Whether you need design or ready for production, we have a full suite of services to offer.



Virgin Material

Ready to Ship Cargo



wn a professional team of engineers and designers, who could make custom molding to meet the specific needs and keep designing new products continuously.



Since 1997, we provide OEM services to the customers in 60 countries, such as Akro-Mils, Grainger, Amazon, etc. Most of the OEM products obtain patents.





There are 5 fixed professional technicians in the laboratory.

Quality is our core value. From raw materials to the end of production, we have implemented the most stringent quality control system. Each batch of products will be sampled by the laboratory. All production procedures and test methods are performed in accordance with industry practices and international standards.

When choosing a OEM supplier, customers must consider not only the price of the mold and products, but various secondary costs involved as well. These costs may include:

  1. The cost of a short injection mold life due to inferior materials
  2. The cost of rewor king the parts     
  3. The cost of products leadtime due to poor efficiency of the mold worse quality

So when you need a precision machined tool to produce plastic component but you do not have the resources to manufacture it,  please contact with us.
Whether you need design or ready for production, we have a full suite of services to offer:

  1. Products Design
  2. Mold Design
  3. Mold Bulding with A Lifetime Guarantee
  4. Prototype  Providing
  5. Production
  6. Logo Printing
  7. Packaging
  8. Injection Mold Maintainance

OEM Plaistc Injection Products Dispaly


The Four Basic Components of a Screw Shaft

There are 4 basic components of a screw shaft: the Head, the Thread angle, and the Threaded shank. These components determine the length, shape, and quality of a screw. Understanding how these components work together can make purchasing screws easier. This article will cover these important factors and more. Once you know these, you can select the right type of screw for your project. If you need help choosing the correct type of screw, contact a qualified screw dealer.

Thread angle

The angle of a thread on a screw shaft is the difference between the 2 sides of the thread. Threads that are unified have a 60 degree angle. Screws have 2 parts: a major diameter, also known as the screw’s outside diameter, and a minor diameter, or the screw’s root diameter. A screw or nut has a major diameter and a minor diameter. Each has its own angle, but they all have 1 thing in common – the angle of thread is measured perpendicularly to the screw’s axis.
The pitch of a screw depends on the helix angle of the thread. In a single-start screw, the lead is equal to the pitch, and the thread angle of a multiple-start screw is based on the number of starts. Alternatively, you can use a square-threaded screw. Its square thread minimizes the contact surface between the nut and the screw, which improves efficiency and performance. A square thread requires fewer motors to transfer the same load, making it a good choice for heavy-duty applications.
A screw thread has 4 components. First, there is the pitch. This is the distance between the top and bottom surface of a nut. This is the distance the thread travels in a full revolution of the screw. Next, there is the pitch surface, which is the imaginary cylinder formed by the average of the crest and root height of each tooth. Next, there is the pitch angle, which is the angle between the pitch surface and the gear axis.


There are 3 types of head for screws: flat, round, and hexagonal. They are used in industrial applications and have a flat outer face and a conical interior. Some varieties have a tamper-resistant pin in the head. These are usually used in the fabrication of bicycle parts. Some are lightweight, and can be easily carried from 1 place to another. This article will explain what each type of head is used for, and how to choose the right 1 for your screw.
The major diameter is the largest diameter of the thread. This is the distance between the crest and the root of the thread. The minor diameter is the smaller diameter and is the distance between the major and minor diameters. The minor diameter is half the major diameter. The major diameter is the upper surface of the thread. The minor diameter corresponds to the lower extreme of the thread. The thread angle is proportional to the distance between the major and minor diameters.
Lead screws are a more affordable option. They are easier to manufacture and less expensive than ball screws. They are also more efficient in vertical applications and low-speed operations. Some types of lead screws are also self-locking, and have a high coefficient of friction. Lead screws also have fewer parts. These types of screw shafts are available in various sizes and shapes. If you’re wondering which type of head of screw shaft to buy, this article is for you.

Threaded shank

Wood screws are made up of 2 parts: the head and the shank. The shank is not threaded all the way up. It is only partially threaded and contains the drive. This makes them less likely to overheat. Heads on wood screws include Oval, Round, Hex, Modified Truss, and Flat. Some of these are considered the “top” of the screw.
Screws come in many sizes and thread pitches. An M8 screw has a 1.25-mm thread pitch. The pitch indicates the distance between 2 identical threads. A pitch of 1 is greater than the other. The other is smaller and coarse. In most cases, the pitch of a screw is indicated by the letter M followed by the diameter in millimetres. Unless otherwise stated, the pitch of a screw is greater than its diameter.
Generally, the shank diameter is smaller than the head diameter. A nut with a drilled shank is commonly used. Moreover, a cotter pin nut is similar to a castle nut. Internal threads are usually created using a special tap for very hard metals. This tap must be followed by a regular tap. Slotted machine screws are usually sold packaged with nuts. Lastly, studs are often used in automotive and machine applications.
In general, screws with a metric thread are more difficult to install and remove. Fortunately, there are many different types of screw threads, which make replacing screws a breeze. In addition to these different sizes, many of these screws have safety wire holes to keep them from falling. These are just some of the differences between threaded screw and non-threaded. There are many different types of screw threads, and choosing the right 1 will depend on your needs and your budget.


There are 3 types of screw heads with points: cone, oval, and half-dog. Each point is designed for a particular application, which determines its shape and tip. For screw applications, cone, oval, and half-dog points are common. Full dog points are not common, and they are available in a limited number of sizes and lengths. According to ASTM standards, point penetration contributes as much as 15% of the total holding power of the screw, but a cone-shaped point may be more preferred in some circumstances.
There are several types of set screws, each with its own advantage. Flat-head screws reduce indentation and frequent adjustment. Dog-point screws help maintain a secure grip by securing the collar to the screw shaft. Cup-point set screws, on the other hand, provide a slip-resistant connection. The diameter of a cup-point screw is usually half of its shaft diameter. If the screw is too small, it may slack and cause the screw collar to slip.
The UNF series has a larger area for tensile stress than coarse threads and is less prone to stripping. It’s used for external threads, limited engagement, and thinner walls. When using a UNF, always use a standard tap before a specialized tap. For example, a screw with a UNF point is the same size as a type C screw but with a shorter length.


A spacer is an insulating material that sits between 2 parts and centers the shaft of a screw or other fastener. Spacers come in different sizes and shapes. Some of them are made of Teflon, which is thin and has a low coefficient of friction. Other materials used for spacers include steel, which is durable and works well in many applications. Plastic spacers are available in various thicknesses, ranging from 4.6 to 8 mm. They’re suitable for mounting gears and other items that require less contact surface.
These devices are used for precision fastening applications and are essential fastener accessories. They create clearance gaps between the 2 joined surfaces or components and enable the screw or bolt to be torqued correctly. Here’s a quick guide to help you choose the right spacer for the job. There are many different spacers available, and you should never be without one. All you need is a little research and common sense. And once you’re satisfied with your purchase, you can make a more informed decision.
A spacer is a component that allows the components to be spaced appropriately along a screw shaft. This tool is used to keep space between 2 objects, such as the spinning wheel and an adjacent metal structure. It also helps ensure that a competition game piece doesn’t rub against an adjacent metal structure. In addition to its common use, spacers can be used in many different situations. The next time you need a spacer, remember to check that the hole in your screw is threaded.


A nut is a simple device used to secure a screw shaft. The nut is fixed on each end of the screw shaft and rotates along its length. The nut is rotated by a motor, usually a stepper motor, which uses beam coupling to accommodate misalignments in the high-speed movement of the screw. Nuts are used to secure screw shafts to machined parts, and also to mount bearings on adapter sleeves and withdrawal sleeves.
There are several types of nut for screw shafts. Some have radial anti-backlash properties, which prevent unwanted radial clearances. In addition, they are designed to compensate for thread wear. Several nut styles are available, including anti-backlash radial nuts, which have a spring that pushes down on the nut’s flexible fingers. Axial anti-backlash nuts also provide thread-locking properties.
To install a ball nut, you must first align the tangs of the ball and nut. Then, you must place the adjusting nut on the shaft and tighten it against the spacer and spring washer. Then, you need to lubricate the threads, the ball grooves, and the spring washers. Once you’ve installed the nut, you can now install the ball screw assembly.
A nut for screw shaft can be made with either a ball or a socket. These types differ from hex nuts in that they don’t need end support bearings, and are rigidly mounted at the ends. These screws can also have internal cooling mechanisms to improve rigidity. In this way, they are easier to tension than rotating screws. You can also buy hollow stationary screws for rotator nut assemblies. This type is great for applications requiring high heat and wide temperature changes, but you should be sure to follow the manufacturer’s instructions.

China wholesaler 25years China Factory OEM ODM /Customized PP/PC/PE/ABS/PVC/PS/Nylon Injection Molding/ Tooling Plastic Parts for Car/Auto/Tractor/Vehicle     with Free Design CustomChina wholesaler 25years China Factory OEM ODM /Customized PP/PC/PE/ABS/PVC/PS/Nylon Injection Molding/ Tooling Plastic Parts for Car/Auto/Tractor/Vehicle     with Free Design Custom