Sanwei – Your Professional Bolt Manufacturer

 

Hebei Sanwei Fasteners Co., Ltd. is a high-tech company specialized in the research, development, production, and sale of fasteners in Hebei Province, China. Since our establishment, we have been dedicated to providing customers with high-quality, high-performance fastener solutions for various industries.

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OEM/ODM Service

Our customised fasteners are made to your special requirements. It can be fully threaded or partially threaded, and the thread, driving method, material, length, head shape, plating and all these can be specially designed according to your needs.

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Advanced CNC Machining Technology

From material selection to finished products, Handan Sanwei provides comprehensive customized solutions. With precise CNC machining capabilities, we can meet diverse precision requirements and deliver consistent quality you can trust.

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Strong engineering design team

Our company has an excellent and professional engineering team, and a number of technicians are elites in the industry. The staff always strives to explore new methods and technologies. From the selection of metals and special alloy materials to the finished fasteners, we can solve all aspects of the whole project engineering.

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Digital Quality Control System

We rely on our self-developed full-process digital quality inspection system to strictly control every step from raw materials entering the factory to finished products being shipped. This system will always monitor the quality of the products to ensure that each batch of products meets the industry standards and complies with customer requirements. 

 

  • 304 Stainless Steel Hex Nuts, DIN934 Standard, M3-M36
    Details:product Corrosion Rust Resistant Made of 304 stainless steel, moisture-proof and anti-oxidation, hardly rusty in humid outdoor environments. Stable Hardness High toughness and strong clamping
  • 304 Stainless Steel Hex Nuts, DIN934 Standard, M3/M4/M5/M6
    product Corrosion Rust Resistant Made of 304 stainless steel, moisture-proof and anti-oxidation, hardly rusty in humid outdoor environments. Stable Hardness High toughness and strong clamping force,
  • Butterfly Nut M8 Wing Nuts
    Standard: DIN315 . Name:Butterfly Nut Wing Nuts. Material: Carbon Steel,304,306 stainless steel. Grade:Din .
  • M6 Zinc Plated Hex Nuts
    Standard: DIN985. Name: Hex nut. Material: Carbon Steel,304,306 stainless steel. Grade:Din .
  • Hex Lock Nut
    Standard: DIN985. Name: Hex lock nut. Material: 304 stainless steel. Grade:A2-70.
  • Hexagon Anti-loosening Lock Nut
    Standard: GB6184/DIN980. Name:Hexagon anti-loosening lock nut . Material: Stainless steel.
  • Black Hex Nut
    Standard: GB6170-86. Name: Black Hex Nut. Material: Carbon steel.
  • High Strength Hexagon Nuts DIN934
    Standard: DIN 934. Name: Hexagon Nuts. Material: carbon steel,Stainless Steel and alloy steel,etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8,SS201,SS304,SS316
  • Stainless Steel Hex Nut
    Standard: DIN934. Name: Stainless steel hex nut. Material: carbon steel and alloy steel, etc.. Grade: 4.8 grade, 5.8 grade, 8.8 grade
  • Hexagon Flanged Nuts DIN6923
    Standard: DIN 6923. Name: Hexagon Flanged Nuts. Material: carbon steel,Stainless Steel and alloy steel,etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8,SS201,SS304,SS316
  • Hex Nut
    Standard: DIN934. Name: Hex nut. Material: 304 stainless steel. Grade: Grade 4.8, Grade 5.8, Grade 8.8, Grade 10.9, Grade 12.9
  • Square Weld Nut DIN928
    Standard: DIN 928. Name: Square Weld Nuts. Material: carbon steel,Stainless Steel and alloy steel,etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8,SS201,SS304,SS316
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Specification

 

 

Product name

Nut

Standard

DIN934/DIN985/DIN986/DIN6923/GB6170/ASME/ANSI B18.2.2 

Grade

Grade 4.8, Grade 5.8, Grade 8.8,SS201,SS304,SS316

Material

Carbon steel,Stainless Steel and alloy steel,etc.

Packing

Carton + Woven Bag +Pallet

Nominal diameter

M4-M36

Pitch

0.4-5

Surface treatment

ZP,YZ,BLACK

Place of origin

Hebei, China

Standard

ISO,DIN, ANSI/ASME, JIS ,GB, DIN, ISO, ANSI, BS, JIS, GB

 

 

Application of Nut

 
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Construction and Infrastructure

Nuts are critical in construction and infrastructure projects. They are used to join steel beams, columns, and other structural elements in buildings, bridges, and other structures. Here are some key applications:
Steel Framework
In steel construction, nuts are used to connect beams and columns, forming the skeleton of buildings and bridges.

Concrete Anchoring
Nuts are also used to anchor structures to concrete foundations. Anchor bolts, which are embedded in concrete, provide a secure base for various construction elements, ensuring stability and safety.

Railway and Highway Construction
Nuts are essential in the construction of railways and highways. They secure tracks, guardrails, and other critical components, ensuring the safety and durability of transportation infrastructure.

Automotive and Aerospace Industries

The automotive and aerospace industries rely heavily on nuts for assembling vehicles and aircraft. Precision and reliability are crucial in these applications:
Engine Components
Nuts are used to secure various engine components, including cylinder heads, manifolds, and engine mounts. High-temperature and high-strength materials are often required to withstand the demanding conditions within engines.

Chassis and Suspension Systems
In vehicles, nuts are used to assemble chassis and suspension systems. These connections must withstand vibrations, impacts, and dynamic loads, requiring high-strength fasteners for safety and performance.

Aircraft Assembly
In the aerospace industry, nuts are used in the assembly of airframes, wings, and other critical components. Aerospace-grade fasteners are designed to meet stringent standards for strength, weight, and corrosion resistance.

Machinery and Equipment

Nuts are widely used in the assembly and maintenance of machinery and equipment across various industries:
Manufacturing Equipment
In manufacturing, nuts are used to assemble and maintain machinery, including conveyor systems, robotics, and production lines. These fasteners must provide reliable connections that can withstand repetitive use and mechanical stress.

Agricultural Machinery
Agricultural equipment, such as tractors, harvesters, and plows, rely on nuts for assembly and maintenance. These fasteners must withstand harsh environmental conditions, including moisture, dirt, and mechanical loads.

Heavy Equipment
In industries such as construction, mining, and forestry, heavy equipment relies on nut fasteners for assembling components and ensuring structural integrity. These applications often require high-strength and corrosion-resistant fasteners.

Household and DIY Projects

In everyday life, nuts are commonly used in household repairs, furniture assembly, and DIY projects:
Furniture Assembly
Many pieces of furniture, such as beds, tables, and chairs, are assembled using nuts. These fasteners provide sturdy connections that can be easily tightened or loosened as needed.

Home Repairs
Nuts are often used in home repairs, such as fixing cabinets, shelves, and fixtures. Their versatility makes them ideal for a wide range of repair tasks.

DIY Projects
DIY enthusiasts frequently use nuts for various projects, from building custom furniture to constructing outdoor structures. Their availability in various sizes and materials makes them suitable for diverse applications.

 

 

Types of Nut

 
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Lock Nuts

Lock nuts utilize friction between the nut and bolt to self-lock, ensuring the stability of the connection. In some critical applications, additional anti-loosening measures may be taken to ensure the reliability of nut locking. Lock nuts are widely used in industries such as machinery to secure threaded pipe fittings or other components, ensuring stable and safe connections.

 

Flange Nuts

Flange nuts, also known as flanged nuts, washer-faced nuts, serrated flange nuts, or hex flange nuts, feature a wide flange at one end, which effectively acts as an integrated washer. When the nut is tightened, this flange distributes pressure evenly across the secured component, reducing the risk of damage due to excessive pressure and increasing the stability of the entire connection.

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Hex Nuts

Hex nuts are named for their hexagonal shape, featuring six equal sides and angles. This design allows them to be easily tightened or loosened using tools such as wrenches or screwdrivers.

 

Wing Nuts

Wing nuts feature a wing-shaped structure with wings on each side of the nut, allowing them to be easily rotated by hand without the need for tools. This makes them particularly suitable for use on equipment that requires frequent disassembly or fastening. Their design enables quick and convenient operation.

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Packaging and Shipping

 
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FAQ

 

 

Q: I need a customized fastener, but it's not on your website. What do I do?

A: Please send us your request with detailed drawings or photos, then we will make the quotation for you accordingly.

Q: In general, how long can delivery be made after receiving an order?

A: Regular orders can be completed and shipped within 15-20 working days after receiving the deposit and confirming product details.

Q: During the product usage process, if we encounter technical problems, can you provide technical support?

A: Sure. We have a professional technical team that can provide you with technical consultation and guidance through methods such as telephone, email, or video conference.

Q: What is the packaging method of the product?

A: 50KG bag and pallet.

Q: What are nuts in hardware?

A: Nuts are fasteners with threaded holes that secure to bolts, screws or studs and hold parts together. Once securely fastened, a nut prevents axial movement in connected materials.

Q: What are nuts used for tools?

A: Nut, in technology, fastening device consisting of a square or hexagonal block, usually of metal, with a hole in the centre having internal, or female, threads that fit on the male threads of an associated bolt or screw. A bolt or screw with a nut is widely used for fastening machine and structural components.

Q: What is the function of the nut and bolt?

A: Both the bolt and the nut grip the materials being fastened, creating a bolt joint, with the nut also preventing axial movement. The effect of the bolt joint comes down to the axial clamping force provided by the nut and the shank of the bolt, which acts as a rod that presses the joint against sideways shear forces.

Q: What type of steel are nuts?

A: Nuts and bolts are generally made of low-alloy steel, stainless steel, or titanium, and have medium-to-high strength (100 ksi or more). Rivets are made from steel, aluminum, or both, depending on their application, and are generally heat-treated to be as strong as possible.

Q: What is the difference between nuts and bolts?

A: A nut is a component that fits over the end of a bolt and helps it hold objects in place. A bolt is a non-tapered fastener that uses a washer and nut to hold objects together. A screw is a tapered fastener that mates with an existing thread or creates its own thread in a material as it turns.

Q: Which is stronger nut or bolt?

A: The bolt might be stronger than the nut, especially if it’s made from a higher grade or stronger material. However, in a properly designed and assembled fastening system, both the nut and the bolt should be appropriately matched in strength to ensure the overall integrity of the joint.

We're professional nut manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized nut made in China here from our factory. Contact us for quotation.

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