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.

productcate-750-500

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.

productcate-750-500

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.

productcate-750-500

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.

productcate-750-500

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. 

 

  • High Strength 8.8 10.9 12.9 Hex Bolts Carbon Steel Stainless Steel Zinc Plated
    Details:Standard: DIN933/931Name: Hex head boltsMaterial: carbon steel, stainless steel, etc.Grade: Grade 4.8, Grade 5.8, Grade 8.8Send inquiry
  • 304 Stainless Steel Hex Socket Cap Screws, Cylindrical Head Extended Bolts M2-M4-M5-M6-M8
    PRODUCT DETAILS Key Advantages of 304 Hex Socket Cap Screws Sanitary warePremium 304 Stainless Steel Excellent corrosion & rust resistance, durable for outdoor/harsh use. Efficient Hex Socket
  • Custom Hex Head Bolts Carbon Steel 304 316 Stainless Steel Zinc Plated
    Details:Standard: DIN933/931Name: Hex head boltsMaterial: carbon steel, stainless steel, etc.Grade: Grade 4.8, Grade 5.8, Grade 8.8Send inquiry
  • 304 Stainless Steel Full Thread Stud Bolt M8-M20 Double End Stud Bolt
    These 304 stainless steel full thread studs range from M8 to M20. Made of high-quality 304 stainless steel, they feature excellent rust resistance, corrosion resistance and high toughness. Full
  • T Bolt
    T-bolts are specialized fasteners designed with a T-shaped head, enabling them to slot into T-slots—standardized grooves found in workbenches, machine tools, and structural frames. Their unique
  • Concrete Nail
    Concrete nails are specialty fasteners designed for use in hard materials such as concrete, brick, and stone. Here is a brief introduction:FeaturesHigh strength: Made of high - carbon steel or alloy
  • Steel Carriage Bolt
    The dimensions of carriage bolts are typically defined by core parameters including thread diameter, length, and head dimensions. The common standards (taking metric as an example) are as
  • Nylon Nuts
    Nylon nuts are a type of nut made from nylon material3. They are widely used in various industrial fields and have the following characteristics and applications: Material and Structure : Nylon nuts
  • Hollow Threaded Rod
    Outer Diameter (Nominal Diameter)The maximum diameter of the external thread, typically in millimeters (mm).For construction support: Common range 30mm - 60mm (e.g., 38mm, 48mm, compatible with
  • Customizable Carbon Steel Foundation Bolt
    Name: Foundation Bolt. Standard:GB, DIN Material: carbon steel,Stainless Steel and alloy steel,etc..
  • Customizable Carbon Steel Square Bolt
    Name: Square Bolt. Standard:GB, DIN Material: carbon steel,Stainless Steel and alloy steel,etc..
  • Phillips Head Chipboard Screw
    Thread Diameter: Typically ranges from very small (for delicate applications) to larger sizes (for heavy-duty use). Common diameters include:Small: M1.2, M1.4, M1.6, M2, M2.5Medium: M3, M4, M5,
First 1234567 Last
 
productcate-1000-666
productcate-1000-666

 

 

Specification

 

 

Product name

Bolt

Standards

DIN933/931/6921/ 603/GBWM/ASME

Grades

4.8- 12.9, etc.

Material

Carbon steel, stainless steel, etc.

Length

3mm-3000mm

Packing

Carton + Woven Bag +Pallet

Nominal diameter

M2-M48

Surface treatment

ZP,YZ,BLACK

Place of origin

Hebei, China

Standard

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

Color

Customized Colors

 

 

Applications of Bolts

 
productcate-800-506

 

 

Construction and Building

Bolts are used to secure structural components like steel beams, columns, and concrete foundations, providing the necessary stability and strength for buildings and infrastructure.

productcate-800-506

 

 

Automotive and Aerospace

In these industries, bolts are used for assembling vehicle parts, securing engine components, and attaching various elements of the chassis and body. Their high load-bearing capacity and reliability are crucial for safety and performance.

productcate-800-506

 

 

Heavy Machinery

Bolts are essential for assembling and maintaining heavy machinery, ensuring that components are securely fastened and can withstand operational stresses.

productcate-800-506

 

 

Power and Telecommunications

Used for tower foundation anchoring, power equipment installation, and communication equipment bracket mounting, requiring exceptional stability, durability, and corrosion resistance.

productcate-800-506

 

 

Outdoor Structures

Common products include carriage bolts. With their rounded heads and anti-rotation design, carriage bolts are ideal for wood-to-wood and wood-to-metal connections in furniture, fencing, outdoor decks, garden arbors, and similar applications.

 

Types of Bolt

 

Hex Bolts:

Hex bolts are the most common type of bolts with a hexagonal head. They are used in a wide range of applications, from assembling machinery to constructing buildings.

https://www.swftyfastener.com/bolt/hex-bolt/din-912-hex-bolt.html

 

Stud Bolts:

Double-ended bolts are fasteners with threads at both ends and no threaded section in between, also commonly referred to as double-ended studs. They lack a head structure and rely on the threads at both ends to engage with nuts, thereby achieving a secure connection between two or more components.

https://www.swftyfastener.com/bolt/stud-bolt/double-ended-threaded-bolt-din938-din939.html

 

Bolt Shape:

Bolts come in various shapes, with the core differences lying in head design and shank structure. Different shapes cater to distinct industrial installation scenarios. Examples include: hex head bolts, socket head cap screws, countersunk head bolts, pan head bolts, and T-head bolts.

https://www.swftyfastener.com/bolt/bolt-shape/u-bolts.html

 

Stainless Steel Bolts:

Stainless steel bolts are fasteners manufactured from stainless steel material, combining the fastening function of bolts with the corrosion resistance and aesthetic appeal of stainless steel. They are widely used in industrial settings requiring rust prevention and corrosion resistance, particularly suited for chemical equipment, food machinery, outdoor steel structures, precision machine tools, and similar applications.

https://www.swftyfastener.com/bolt/hex-bolt/stainless-steel-hex-bolts.html

 

Function Bolts:

Functional bolts serve not only as basic fasteners but also perform one or more additional functions such as positioning, guiding, load-bearing, anti-loosening, and power transmission. They are critical connecting components for core equipment parts.

https://www.swftyfastener.com/bolt/function-bolts/carriage-bolt.html

 

Fastening Bolts:

The fastening bolt's structure consists of a head and a shaft as its basic components, requiring no special machining. With standardized models and specifications, it can be procured in bulk and is suitable for most industrial applications without special requirements.

https://www.swftyfastener.com/bolt/fastening-bolts/combination-bolts.html

 

 

 

Parts of a Bolt

 
DIN6921 M5 M6 M8 M10 M12 Hexagon Flange Bolts

Head:

The top part of a bolt used for applying torque with a suitable tool.
Shank:

The unthreaded smooth portion below the head, designed to resist lateral movement of the joined parts.
Threading:

Threads allow the bolt to be screwed into a nut or threaded hole.
Tip:

The end of the bolt, often chamfered to aid insertion.

 

 

Packaging and Shipping

 

 

p20250414113337f1678.png (745×365)

 

 

FAQ

 

 

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

A: Please send us detailed drawings or photos of your requirements, and we will provide a quotation based on your specifications.

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 is your minimum order quantity?

A: Our minimum order quantity (MOQ) varies depending on the bolt type. For standard hex bolts, the MOQ is typically 1,000 pieces per size. This helps us streamline production and cover associated costs. For specialty bolts like custom - designed anchor bolts, the MOQ is around 5,000 pieces due to the complexity of manufacturing. However, we're flexible. If you're ordering a diverse range of bolts, we can negotiate a lower MOQ for each item. For new customers looking to build a long - term relationship, we'll consider reducing the MOQ on a case - by - case basis. For common aluminum bolts, we may set the MOQ as low as 800 pieces to accommodate smaller - scale projects.

Q: How to choose the right bolt size?

A: Here are the key points for choosing the right bolt size. First, consider the application. For light - duty applications like furniture assembly, small - diameter bolts such as M4 or M6 are usually sufficient. In contrast, for heavy - duty machinery or structural connections, larger bolts like M12 or M16 might be required. Second, check the thickness of the materials to be joined. The bolt should be long enough to pass through all the components and allow for proper threading. As a general rule, the bolt length should be about 1.5 times the thickness of the materials. Finally, take into account the available space. If the installation space is limited, you may need to choose a shorter or thinner bolt to fit. In some cases, you might also need to consider the bolt's head type and drive style to ensure it can be properly installed and tightened.

Q: What should I do if there is a problem with the bolts?

A: If you encounter any problems with our bolts, please contact our after - sales service team in a timely manner. We will send professional technicians to check and solve the problem as soon as possible. If the problem is caused by our product quality, we will provide free replacement or compensation.

Q: What types of bolts does your company produce?

A: Our company, a major player in the fastener field, manufactures a wide variety of bolts. Standard bolts are our staple products. We offer hex bolts in diverse grades. Mild - steel ones are great for everyday use, while high - strength alloy steel versions are perfect for heavy - duty tasks. They're available in both metric and imperial sizes, with lengths varying from short to long. Carriage bolts, recognized by their round heads and square necks, are popular for wood - related projects as they prevent rotation. We also produce specialty bolts. Anchor bolts, crucial for attaching structures to concrete, come in wedge - type, headed, and expansion styles. They can endure high forces, ensuring the stability of large - scale constructions. Socket head cap screws, featuring smooth, low - profile heads, are widely used in precision machinery and automotive engines for a neat look. In terms of materials, we have stainless - steel bolts that resist corrosion, suitable for marine and food - processing settings. Aluminum bolts, being lightweight yet strong, are favored in aerospace and automotive industries where weight reduction matters.

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

Send Inquiry