Full range of Screw Nut & Spacer manufacturer in China

FBELE magnet connector, Magnetic Power Connector ,automatic magnetic adsorption connection, neodymium iron boron magnet, strong adsorption force Rich experience in the production of magnet connectors, hundreds of schemes for rapid selection!

  • Thickened dimension
  • Durable
  • Easy to operate and use
  • Customized on demand

What is Screw 

The screw is a tool that uses the physical and mathematical principles of the inclined circular rotation and friction of objects to tighten the mechanical parts of objects step by step. Screw is a general term for fasteners, which is spoken in daily life. Screws are indispensable industrial necessities in daily life: tiny screws used in cameras, glasses, clocks, electronics, etc; General screws for TV, electrical products, musical instruments, furniture, etc; As for engineering, construction and bridges, large screws and nuts are used; Transportation equipment, aircraft, trams, automobiles, etc. are used with both large and small screws. Screws play an important role in industry. As long as there is industry on the earth, the function of screws will always be important. Screw is a common invention in people’s production and life for thousands of years. According to the application field, it is the first great invention of mankind. Screw is also called “screw” and “screw rod”. In fact, screws are general terms, and screws and screw rods are different from each other. Screws are generally called wood screws; It is the kind with a sharp head at the front, with a large pitch. It is generally used to fasten wood and plastic parts. The screw rod is a machine screw (mechanical screw) with a flat head at the front end. The screw pitch is small and uniform. It is generally used to fasten metal and machine parts.

Why Purchase FBELE Screw Nut & Spacer

Accurate dimension

the alignment, fit, thickness and thread accuracy shall be measured with vernier caliper

Best Quality

corrosion resistance, wear resistance, not easy to rust!

Excellent surface treatment

After excellent surface treatment, the appearance becomes very beautiful


All FBELE’screw nuts,spacer passed tensile test, torque test

What is Nuts

Nuts are nuts, which are used to tighten parts together with bolts or screws. According to different materials, all components necessary for production and manufacturing machinery are divided into carbon steel, stainless steel, non-ferrous metals (such as copper). Nuts are parts that closely connect mechanical equipment. Nuts and bolts of the same specification can only be connected together through the inner threads. For example, m4-p0.7 nuts can only be connected with m4-p0.7 series bolts (in nuts, M4 refers to the inner diameter of the nut is about 4mm, and 0.7 refers to the distance between the two threads is 0.7mm); The same is true for American products. For example, a 1/4-20 nut can only be matched with a 1/4-20 screw (1/4 means that the inner diameter of the nut is about 0.25 inches, and 20 means that there are 20 teeth in each inch). Stainless steel nut

Self locking nut, lock nut, lock nut, four jaw nut, screw in nut, safety nut, thin rod screw connecting nut, self-locking hexagonal cap nut, nut for special anchor screw, hexagonal crown thin nut and ring nut.

Fine tooth all metal hexagon flange lock nut, all metal hexagon flange lock nut, fine tooth non-metal insert hexagon flange lock nut, fine tooth hexagon flange nut

Welded square nut, welded hexagon nut, fastening nut and embedded round nut

Slotted round nut, side perforated round nut, end perforated round nut and small round nut

Round nut, ring nut, butterfly nut

Copper nut, inlaid copper nut, knurled copper nut, inlaid copper nut, injection molded copper nut, etc


Zinc copper alloy nut, etc


What is Spacer

The gasket is made of paper, rubber or copper and placed between two planes to strengthen the sealing. It is a sealing element set between the static sealing faces to prevent fluid leakage. Gasket is a mechanical seal between two objects, which is usually used to prevent the two objects from being subjected to pressure, corrosion, and natural thermal expansion and contraction of the pipeline. Since machined surfaces cannot be perfect, irregularities can be filled with shims. Gaskets are usually made of sheet materials, such as pad paper, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, glass fiber or plastic polymer (such as polytetrafluoroethylene). Gaskets for specific applications may contain asbestos.

A washer is a hole (usually in the middle) in a thin plate (usually circular) and is usually a threaded fastener for distributing the load. Other uses are as spacer, spring (Belleville gasket, wave gasket), wear pad, pre display device, lock device. Rubber gaskets are also used in faucets (valves) to cut off the flow of liquid or gas. Rubber or silicon gaskets can also be used to reduce fan vibration. Usually the outside diameter of the gasket is about twice the inside diameter.

China Leading Screw Nut & Spacer Supplier


FBELE, a professional copper nut manufacturer with exquisite technology and high quality, has many years of copper nut production experience, supports customization, complete specifications, factory price direct sales of nuts, and fast delivery.

FBELE’s main products: self tapping screws – series, bolts Studs Screw series, various nuts Rivet nut series, washer, retaining ring series

FBELE focuses on the production of screws, nuts, screws, bolts, washers, gaskets and other fasteners. Its products are widely used in construction, automobile, machinery, mold, communication, electronics and other industries. Customers are welcome to call us at 0086-18868647636

What does customer say about FBELE Company


We saw FBELE on the forum. At that time, we thought that the enterprise’s technical articles were very thorough and in-depth, and its social responsibility was also strong. This year, we just need to have new product development, so we found fbele and asked them to purchase samples. The speed was very fast and the quality was good, waiting for the implementation of the project!


At the beginning of our new project, we encountered some difficulties because we found several other unprofessional Chinese manufacturers. Since we contacted fbele, the project has been promoted rapidly. We have to say that FBELE’s technical team is really strong. Thank FBELE’s technical team.

Screw Nut & Spacer banner
China Best Screw Nut & Spacer  Manufacturer & Supplier

FBELE focuses on the production of screws, nuts, screws, bolts, washers, gaskets and other fasteners. Its products are widely used in construction, automobile, machinery, mold, communication, electronics and other industries. Customers are welcome to call us at 0086-18868647636

FBELE Certification

Genaral Questions About Screw Nut & Spacer

What is self tapping screw?

Self tapping screws are generally pointed and coarse teeth. They are relatively hard wood screws. A special self tapping screw that can be used to open threads in metal holes is called screw tapping. When the self tapping screw is used on the connected part, the connected part may not be threaded in advance. When connecting, the screw is used to directly tap out the thread. It is often used to connect metal plates with relatively thin thickness. There are two kinds of self tapping screws with cone end and flat end.

What is expansion screw?

The expansion screw is generally referred to as metal expansion screw. The expansion screw is fixed by using the friction grip force generated by the wedge-shaped inclination to promote the expansion, so as to achieve the fixed effect. One end of the screw is threaded and the other end is tapered.

What are the common screws?

Ordinary screws are mostly used for connecting smaller parts. There are pan head screws, cylindrical head screws, semi countersunk head screws and countersunk head screws. While the head strength of pan head screws and cylindrical head screws will be relatively high, which is used in the connection of common parts. The head of the semi countersunk head screw is arc-shaped. After installation, its top end is slightly exposed, and it will be very beautiful and smooth. It is generally used in instruments or precision machinery, while the countersunk head screw is used where the nail head is not allowed to be exposed.

How to take out the screw slide?

a. The screw head can be knocked off with an electric drill, and then the screws can be taken out with tools such as vice.

b. On the broken wire, first use electric welding to weld a long iron block. The cross-section of the iron block can refer to the diameter of the screw, but pay attention to the hardness of the material to avoid damage. After welding, quickly drip oil and wet the nut. After it cools down, use the iron cone to tap one end of the iron block in a square direction. After it is loosened, the broken wire can be taken out.

c. Use a screwdriver or a small knife to draw in one direction, so as to enlarge the notch on the surface of the screw. After it reaches a certain length, use a larger screwdriver to unscrew the screw.

Nuts can be divided into:?

There are generally two kinds, one is iron, that is, carbon steel. One is stainless steel, of course, there are copper and aluminum nuts, but these are rarely used. Copper is more or less useful, but aluminum nuts are rarely used. There are two grades of hexagon nuts, one is grade 4.8, ordinary nut, and the other is grade 8 nut.

What are the types of nuts?

The types of nuts include self-locking nuts, lock nuts, lock nuts, four claw nuts, screw in nuts, safety nuts, thin rod screw connecting nuts, self-locking hexagon cap nuts, nuts for special foundation screws, hexagon crown thin nuts, and ring nuts. Self locking nut: a self-locking nut is a nut that can be self-locking by friction. Lock nut: lock nut and self-locking nut are common fastening lock nuts. Including mechanical anti loosening, riveting and punching anti loosening, friction anti loosening, structural anti loosening, etc.

What are the grades of nuts?

The nuts are classified into Grade A, B and C. The product grade is divided according to the thread tolerance grade. The product grade of tolerance grade 7h is grade C. grade C nuts are used on machines, equipment or structures with rough surface and low precision requirements, such as gb41 hex nuts; The product grade of tolerance grade 6h is grade A or B, including type I hex nuts, type 2 hex nuts, flange nuts, etc. Class A (applicable to thread tolerance diameter D ≤ 16mm) and class B (applicable to thread tolerance diameter d > 16mm) nuts are used on machines, equipment or structures with relatively smooth surface and high precision requirements. The accuracy of Grade A is higher than that of grade B. grade A is used for high strength above grade 8, and grade B is used for high strength below grade 8. And tolerance class 5h.

What are the types of gaskets?

There are many kinds of gaskets, which can be roughly divided into three categories according to their materials and structures.

a. Non metallic gasket There are rubber, asbestos rubber plate, flexible graphite, polytetrafluoroethylene, etc. the cross-sectional shape is rectangular;

b. Metal composite gasket There are various metal wrapped pads and metal wound pads;

c. Metal gasket There are metal flat pad, wave pad, ring pad, tooth pad, lens pad, triangle pad, double cone ring, C-ring, hollow O-ring, etc. According to the principle of sealing classification, the first, second and third types of metal flat gasket, corrugated gasket, annular gasket, toothed gasket and lens gasket belong to forced sealing, while the rest are semi self tight or self tight seals

What are the characteristics of brass GASKET?

Brass (copper 66%, zinc 34%) has good corrosion resistance under most working conditions, but it is not suitable for acetic acid, ammonia, salt and acetylene. The recommended continuous working temperature shall not exceed 260 ℃. The Brinell hardness is about 58. 10. Which company has the best quality of screws, nuts and gaskets? Fbele is a manufacturer who orders all kinds of precision metal gaskets, bearing seat adjusting gaskets, washers, mechanical gaskets, motor adjusting gaskets, combined thickness gasket sets, ultra-thin gaskets and hand torn gaskets. We can order all kinds of precision peelable gaskets, ultra-thin gaskets, non-standard special metal gaskets, ultra wide gaskets, large-scale mechanical equipment gaskets, adjustment gasket sets, etc. according to customer requirements and drawings. The number of orders is unlimited.

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