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.

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.

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.

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.

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.
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High Strength 8.8 10.9 12.9 Hex Bolts Carbon Steel Stainless Steel Zinc PlatedDetails:Standard: DIN933/931Name: Hex head boltsMaterial: carbon steel, stainless steel, etc.Grade: Grade 4.8, Grade 5.8, Grade 8.8Send inquiry
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304 Stainless Steel Hex Socket Cap Screws, Cylindrical Head Extended Bolts M2-M4-M5-M6-M8PRODUCT 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
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Custom Hex Head Bolts Carbon Steel 304 316 Stainless Steel Zinc PlatedDetails:Standard: DIN933/931Name: Hex head boltsMaterial: carbon steel, stainless steel, etc.Grade: Grade 4.8, Grade 5.8, Grade 8.8Send inquiry
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304 Stainless Steel Full Thread Stud Bolt M8-M20 Double End Stud BoltThese 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
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T BoltT-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
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Concrete NailConcrete 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
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Steel Carriage BoltThe 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
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Nylon NutsNylon 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
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Hollow Threaded RodOuter 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
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Customizable Carbon Steel Foundation BoltName: Foundation Bolt. Standard:GB, DIN Material: carbon steel,Stainless Steel and alloy steel,etc..
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Customizable Carbon Steel Square BoltName: Square Bolt. Standard:GB, DIN Material: carbon steel,Stainless Steel and alloy steel,etc..
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Phillips Head Chipboard ScrewThread 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,


Specification
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Product name |
Bolt |
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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

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.

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.

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

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

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

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

FAQ
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.


