Carriage Bolts

A carriage bolt is essentially a type of fastener that features a round head and a square neck bolt. It consists of two main components: the head and the screw rod. Like most fasteners, it is used in conjunction with a nut to secure two parts together through pre-drilled holes. What sets carriage bolts apart is their unique square neck structure, which makes them ideal for use in grooves. When installed, the square neck fits snugly into the groove, preventing the bolt from rotating while still allowing horizontal movement. Additionally, the round head on the square neck serves as an anti-theft feature, adding an extra level of security.

With over 23 years of expertise in carriage bolt manufacturing, Jinrui holds a prominent position in China. Our extensive range includes metric carriage bolts and other standard varieties, all of which are supplied with exceptional quality. Additionally, we offer customization services to meet your specific requirements, ensuring that you receive high-quality carriage bolts tailored to your needs. Our commitment to excellence is demonstrated through our ISO9001:2015 quality system certification and IATF16949:2016 automotive quality management system certification. To further assure customer satisfaction, we have obtained "Global Product Liability Insurance" from the People's Insurance Company of China. At present, Jinrui's production line features more than 30 types of bolts, nuts, studs, screws, washers, and various non-standard products, with an annual production capacity exceeding 30,000 tons.

Jinrui is a leading manufacturer of carriage bolts that produces a wide variety of different types of products. We have an extensive range of carriage bolts available for purchase, and we can also provide custom options based on your individual requirements. Our team can help you select the right type of carriage bolt for your application, including coatings, sizes and specifications. When it comes to quality, durability, and reliability, you can count on Jinrui to deliver superior products every time. Trust us to provide you with the best possible carriage bolts for your project.

The required specifications for the carriage bolts are large size and a semi-circular head, which should comply with the standard GB/T14-8 and DIN603. I request you to produce a revised version of the content by reorganizing the given details, while ensuring that the generated content maintains the essence of the original information. Please avoid using ChapGPT for content generation and instead utilize a language model to present a markedly different approach to the conversation.

The large semi-round head carriage bolt comprises a screw rod and a massive semi-round head that functions within the groove. During installation, the bolt's square neck fits snugly into the groove's groove and prevents it from turning, while still allowing for the bolt's parallel motion within the groove. Since the head is circular, there are no openings for the insertion and removal of tools like cross recesses, making it a practical anti-theft deterrent. By rearranging the information provided in the original text, we can glean additional details about the bolt's unique features and applications.

GB/T12-85 standard requires the use of small round head carriage bolts. To ensure conformity with the standard, it's crucial to procure bolts that match this specification. The bolts should have a compact and circular head, similar to the one detailed in the said standard. Choosing the right bolts can help avoid potential issues down the line and ensure the desired level of performance.

The small semi-round head carriage bolt features a screw rod and a small round head that operates in a groove. During installation, the square neck can be embedded in the groove, preventing the bolt from rotating while allowing it to move in parallel. Additionally, the bolt's rounded head lacks slots or other openings for tools, making it more tamper-proof in practical applications. While the functionality of the smaller semi-round carriage bolt resembles that of its larger counterpart, the main distinction between the two lies in the specific use cases for which they are appropriate.

Carriage bolts are uniquely-designed fasteners that boast of excellent advantages in specific use scenarios. Thanks to their round head and square neck structure, these bolts are incredibly easy to install, resistant to loosening, and somewhat theft-proof. When it comes to materials, carbon steel carriage bolts are highly durable and boast of excellent tensile strength and toughness, making them ideal for harsh working environments. On the other hand, stainless steel carriage bolts are highly resistant to corrosion and enjoy a significantly prolonged lifespan.

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.

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.

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.

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.

Hot Tags: carriage bolts, China carriage bolts manufacturers, suppliers, factory