China manufacturer M3*86 Blue Zinc-Plated Carbon Steel Double Spindle Threaded Rod Shaft/Axis wholesaler

Product Description

M3*86 Blue Zinc-Plated Carbon Steel Double Spindle Threaded Rod Shaft/Axis

Product Description

 

Item M3*86 Blue Zinc-Plated Carbon Steel Double Spindle Threaded Rod Shaft/Axis  (Customizable screw)
Head Type Straight Shaft
Drive Style Real Axis
Material Blue Zinc-Plated
Finish NIL
Available Raw Material Carbon steel
Alloy steel
Stainless steel
Brass, Bronze, Aluminum
Standard DIN,ANSI,ASTM,JIS,GB,ISO,NON-STHangZhouRD
Grade 3.6/4.8/5.6 /6.8/8.8/9.8/10.9/12.9
Surface finishing Plain
Galvanized (various of color) ,Zinc-Plated (various of color)
Nickel- Plated, Chrome-Plated, Oxide Black
Passivation, Dacromet, Nylok Precote,
Baking Paint/Stoving Varnish,
Electrophoresis Black
Heat Treatment Carburization or tempering or high-frequency quenching
Packing Plastic Bag/Boxes /Cartons/Pallets/Customize, or customer request

Detailed Photos

 

Company Profile

 

HangZhou CZPT Hardware Technology Co., Ltd. is a professional manufacturer of copper, aluminum, iron, stainless steel and other standard and non-standard screws.

The factory is well equipped, strong technical force. The company specially hired professional and technical personnel to engage in development, design, production, sales and a series of work; The company now has Japan, ZheJiang excellent set of excellent equipment; Have a group of experienced technical and quality control personnel; We have a business team with rich customer service experience.

“Excellent quality, good service system” is the guarantee of success, is the real commitment and return to customers! We take “quality, service, innovation, development” as the CZPT theme of the business philosophy, and the company will continue to improve the production process, improve the service system, in accordance with the industry quality standards, welcome to call the consultation.

Our workshop

 

Our services

 

Cooperative brand

 

Packaging & Shipping

 

FAQ

1.Are you trading company or manufacturer?
We are factory with 20+ years experience in fastener making in China.
 
2.Do you provide samples? Is it free or fee charge?
Free samples will be ready within 3 days if available in stock or if tooling is available, but we do not pay for shipping.If we don’t have any in stock, we need to re-customize the sample and charge the sample fee.

3. What is your delivery time?
It depends on if we have stock or not, if we have stock goods, we can delivery within 3-5 days after receive the payment. And normally our production is in 20-30 days for products.
 
4.Can you give me help if my products are very urgent?
Yes, we will try our best give you help. Because we have our own factory to produce. We can flexible to adjust our production schedule.
 
5.I want to keep our design in secret, can we sign NDA?
Sure, we will not display any customers’ design or show to other people, we can sign NDA.
 
6.Can we know the production process without visiting the factory?
We will offer detailed production schedule and send pictures and videos which show the machining progress.

Shipping Cost:

Estimated freight per unit.



To be negotiated
Material: Carbon Steel
Load: Drive Shaft
Stiffness & Flexibility: Flexible Shaft
Customization:
Available

|

Customized Request

screwshaft

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are two main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on one side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between two and sixteen inches. A screw with a pointy tip has a smaller major diameter than one without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is one element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of one thread to the corresponding point on the next thread. Measurement is made from one thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in one revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are two measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are two ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with two or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are two types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

China manufacturer M3*86 Blue Zinc-Plated Carbon Steel Double Spindle Threaded Rod Shaft/Axis   wholesaler China manufacturer M3*86 Blue Zinc-Plated Carbon Steel Double Spindle Threaded Rod Shaft/Axis   wholesaler
editor by CX 2023-05-12

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