Carriage Bolts
A carriage bolt consists of mushroom head and screw (with external threads), it needs matching with nut to fasten and connect two parts with through holes. One of the widely used carriage bolts is standard DIN603 with metric M5 to M20 thread.
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Product Introduction
Carriage Bolts: The Ideal Solution for Your Fixing Needs
If you are looking for a reliable and durable solution for your fixing needs, Carriage Bolts are the perfect choice for you. Our high-quality bolts are designed to provide a secure and stable hold for a wide range of applications, from construction to furniture assembly and beyond. With their easy-to-use design and exceptional strength, Carriage Bolts are the ultimate solution for your fixing needs.
Product Description
Carriage Bolts are a type of bolt that is designed with a cylindrical head and a square neck. The square neck is designed to prevent the bolt from turning when it is tightened and provides a secure and stable hold. The cylindrical head is smooth and round, providing a clean and finished look to your project.
Our Carriage Bolts are made from high-quality steel that has been heat-treated to provide exceptional strength and durability. We offer a wide range of sizes and diameters to accommodate your needs, making it easy to find the perfect bolt for your project.
Why Choose Carriage Bolts?
There are many reasons why Carriage Bolts are the ideal solution for your fixing needs. First and foremost, our bolts are exceptionally strong and durable, ensuring that they will provide a secure hold for your project. They are also incredibly easy to use, allowing you to quickly and easily install them without any special tools or expertise.
Another advantage of Carriage Bolts is their versatility. They can be used for a wide range of applications, from construction to furniture assembly and beyond. They are particularly useful for projects where stability and security are critical, such as outdoor structures, bridges, and other large-scale projects.
In addition to their strength and versatility, Carriage Bolts are also incredibly cost-effective. They are available at a competitive price point, making them an affordable option for any project.
Applications
Carriage Bolts are ideal for a wide range of applications, including:
Construction
Furniture assembly
Structural applications
Outdoor structures (such as bridges, decks, and pergolas)
Industrial equipment
And more!
With their exceptional strength and versatility, Carriage Bolts are the ultimate solution for your fixing needs.
Conclusion
If you are looking for a reliable and durable solution for your fixing needs, Carriage Bolts are the perfect choice for you. Our high-quality bolts are designed to provide a secure and stable hold for a wide range of applications, from construction to furniture assembly and beyond. With their easy-to-use design and exceptional strength, Carriage Bolts are the ultimate solution for your fixing needs.
Contact us today to learn more about Carriage Bolts and how they can benefit your project!
What is a carriage bolt? The carriage bolt actually refers to the round head square neck bolt. Its main structure is the head and the screw rod. Like most fasteners, it needs to be used in conjunction with the nut to connect two parts with through holes for fastening. effect. Moreover, because of its unique square neck structure, the carriage bolts are often used in the groove. During the installation process, the square neck is stuck in the groove to prevent the bolt from rotating, but it will not affect its horizontal movement, and thanks to the round head on the square neck , and can make it play the role of anti-theft in actual work.
Jinrui is a professional carriage bolt manufacturer in China, we have more than 23 years of experience in the production of carriage bolts, we can provide you with all standard carriage bolts, such as metric carriage bolts, etc., and we can also customize high-quality carriage bolts for you. At present, Jinrui has passed ISO9001:2015 quality system certification and IATF16949:2016 automotive quality management system certification. Moreover, we have insured the "Global Product Liability Insurance" in the People's Insurance Company of China to ensure that our customers can buy with confidence. Jinrui currently produces more than 30 types of bolts, nuts, studs, screws, washers and other non-standard products, with an annual output of more than 30,000 tons.
Types of Carriage bolts
As a professional carriage bolts manufacturer, Jinrui currently produces the following types of carriage bolts (in addition, according to your usage, we can customize products, coatings, specifications, etc. that meet your needs):
Large half round head carriage bolts (corresponding to standard GB/T14-8 and DIN603)
The large semi-round head carriage bolt is composed of a large semi-round head and a screw rod, and acts in the groove. When installing, the square neck can be stuck in the groove to prevent the bolt from rotating, but it will not affect the parallel movement of the bolt in the groove. And because the head is round, there is no place for loading and unloading tools such as cross recesses, so it can also play a certain role in preventing theft in practical applications.
Small round head carriage bolts (corresponding to standard GB/T12-85)
The small semi-round head carriage bolt is composed of a small round head and a screw rod, acting in the groove. The square neck can be stuck in the groove during installation to prevent the bolt from rotating, but it will not affect the parallel movement of the bolt in the groove. And because the head is round, there is no place for loading and unloading tools such as cross recesses, so it can also play a certain role in preventing theft in practical applications. Comparing the large semi-round head carriage bolts, the functions of the two are basically the same, and the difference is only in the different usage scenarios.
Feature and Advantage
Because of its unique round head and square neck structure, carriage bolts have great advantages in specific use scenarios. They have the advantages of easy installation, not easy to loosen and anti-theft to a certain extent. Carbon steel carriage bolts made of carbon steel as raw materials It also has excellent tensile strength and toughness, and can adapt to complex environments. The stainless steel carriage bolts made of stainless steel have good corrosion resistance and greatly prolong the service life.
Jinrui is a supplier of carriage bolts in China. We provide high-quality carriage bolts to the world. The carriage bolts we produce are all made of raw materials from well-known steel mills. We can provide corresponding material reports for this. The specification range of carriage bolts we can produce Wide, such as our common m8 carriage bolts, m10 carriage bolts, m12 carriage bolts, 1/4 carriage bolts, 3/8 carriage bolts, etc.
In addition, Jinrui has a reliable, excellent and stable surface treatment process, which can provide you with galvanized carriage bolts, chrome-plated carriage bolts, etc. A high-quality surface treatment provides good corrosion resistance, while the toughness of the coated product is strengthened, making it more durable.
Production Process of Carriage Bolts
Specification of Carriage Bolts
d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
b | L≤125 | 16 | 18 | 22 | 26 | 30 | 38 | 46 |
125＜L≤200 | 22 | 24 | 28 | 32 | 36 | 44 | 52 | |
L>200 | - | - | 41 | 45 | 49 | 57 | 65 | |
dk | max | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
min | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 | |
ds | max | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
k1 | max | 4.1 | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
min | 2.9 | 3.4 | 4.4 | 5.4 | 7.25 | 11.1 | 14.1 | |
k | max | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
min | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.05 | 9.95 | |
r1 | ≈ | 10.7 | 12.6 | 16 | 19.2 | 24.1 | 29.3 | 33.9 |
r2 | max | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 |
r3 | max | 0.75 | 0.9 | 1.2 | 1.5 | 1.8 | 2.4 | 3 |
s | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
Common Grade and Coating
Standard | Material | Grade | Finish | Thread |
DIN933 | carbon steel | 4.6 | Plain | UNC |
Zinc plated | ||||
Alloy steel | Yellow zinc plated | |||
PTFE | ||||
Stainless steel | Black Oxide | UNF | ||
Dacromet | ||||
Other | HDG | |||
Other |
Application Area of Carriage Bolts
Because of its unique shape, the carriage bolt has a wide range of applications. Such as electronics manufacturing, mechanical equipment manufacturing. Carriage bolts are used in chemical industry, valve industry and automobile industry. The carriage bolt is very suitable for fixing wood to metal. Alternatively, square neck carriage bolts can be used to hold the two pieces of wood together. There are also special versions of carriage bolts that effectively fasten two separate metal parts together. In addition, they can be used in a variety of different industries including water industry, railway industry, agriculture and mining.
If you are not clear about your usage scenario, you can consult our customer service. As a professional machine screw manufacturer, we can provide you with reasonable suggestions.
Jinrui: Your Leading Carriage Bolts Manufacturers
Jiangsu Jinrui Metal Products Co., Ltd. is located in Hai'an High-tech Zone, Jiangsu Province, China. It is a professional fastener manufacturer and a professional carriage bolt manufacturer. The company's employees are all from the parent company Shanghai Jinrui Standard Parts Co., Ltd., with more than eight years of work experience and rich production experience. At present, the company's main products include dozens of bolts, nuts, screws, studs, washers and other non-standard products, with business contacts in more than 40 countries and regions around the world. The company has passed ISO9001: 2015 quality system certification and IATF16949: 2016 automotive quality management system certification, and we have also insured the "Global Product Liability Insurance" of the People's Insurance Company of China. At present, the company is equipped with advanced multi-functional cold heading equipment, threading machine, nut machine and large hot heading equipment, as well as professional magnetic testing machine, metallographic analyzer, salt spray tester and other supporting testing equipment to ensure the quality of products , Let customers buy with confidence.
FAQ
Q1: Are you a factory or trading company?
A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.
Q2: How many years you do foreign trade?
A: We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on.
Q3: Do you have enough outputs?
A: We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc.
Q4: How to ensure that every process's quality?
A: First, we have technical drawings for each product when producing.
Second, our workers most have more than 10-years experience of doing hex bolts.
Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately.
Then,the finished parts will be checked again before shipment which insures every product's quality.
Q5: How to ensure the safety of long-distance transportation?
A: We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely.
Q6: What products can you customize?
A:One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.
If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.
Why choose us?
- We ensure that all our Carriage Bolt products are delivered on time and in perfect condition.
- We always practice the core concept of "customer first, efficient execution, continuous improvement, and win-win cooperation".
- We offer free samples of our Carriage Bolt products to help customers make informed decisions.
- We can effectively control costs and continuously improve productivity.
- Our Carriage Bolt products are backed by our commitment to quality and customer satisfaction.
- We have noticed that with the economic growth, the industrial structure is accelerating the transition from simple labor-intensive products to capital and technology-intensive products and self-owned brands and self-developed products.
- Our team of experts can help you choose the right Carriage Bolt products for your specific needs.
- Our company constantly carries out technological innovation and new Carriage Bolts development to stabilize and improve our market position.
- We're committed to providing affordable, high-quality Carriage Bolt products to our customers.
- We actively expand the application fields of our Carriage Bolts to provide higher quality materials for the society.
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