Steel Carriage Bolts
1. AS 1390 Cup Head Bolts with ISO Metric Coarse Pitch Threads
2. Source bolt manufacturer, own factory: with price advantage, eliminating the price difference of middlemen.
3. Adopt the industry's top high-quality thickened steel, high stability and long-lasting durability.
4. Support customer customization.
5. Professional sales and after-sales service, welcome to inquire at any time.
6. Delivery on time.
AS 1390 Steel Carriage Bolts(also known as round head square neck bolts) are a special fastener with a semi-circular head and a square neck. The round head design makes the head of Steel Carriage Bolts semi-circular, making it easier to tighten with tools such as pliers or a wrench. At the same time, this head shape also makes it difficult to hook on other objects, adding convenience and safety to use. The square neck is another distinguishing feature of round head square neck bolts. The square neck design prevents the bolt from rotating with the nut when tightened, providing better retention.
Pictures
Product drawing
Product Specification
Size | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M24 | |
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | |
dk | max | 11.25 | 13.5 | 18 | 22.5 | 27 | 36 | 45 | 54 |
min | 11.14 | 12.4 | 16.9 | 21.2 | 25.7 | 34.4 | 43.4 | 52.1 | |
dsmax | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 | 24.84 | |
k | max | 3.1 | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 | 13.1 |
min | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | |
k1 | max | 3.1 | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 | 13.1 |
min | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | |
s | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 | 24.84 |
min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | 23.16 | |
r | max | 0.4 | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 | 1.6 |
min | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.8 | 0.8 | |
Support customer customization | |||||||||
Some introduction about our company
Application
Jinan Star Company specializes in the production of fastener products. Our bolts, nuts and other products are widely used in machinery, railways, automobiles, construction, electrical, bridges, communications, firefighting and other industries.
Testing Equipment
Jinan Star Fastener Company attaches great importance to product quality and is equipped with complete quality inspection equipment, such as tensile testing machines, torque testers,metallographic microscopes, optical projectors, salt spray test chambers, coating thickness gauges, etc., which are used to test the tensile strength and elongation of fastener products and evaluate the mechanical properties of products. These equipment ensure that every link from raw materials to finished products can be strictly controlled in quality.
Production equipment
In order to meet the needs of different customers, the company has introduced a series of advanced production equipment, such as multi-station cold heading machines, thread rolling equipment, heat treatment equipment, shot blasting machines, sand blasting machines, electroplating lines and other surface treatment equipment, and fully automatic packaging equipment. These equipment not only improve production efficiency, but also ensure the consistency and stability of product quality.
Packing
Service
1: What are the main characteristics and advantages of Steel Carriage Bolts?
Answer: The main feature of the carriage bolt is its semi-round head and square neck design. The bolts of this design are not easy to rotate when tightened and have good consolidation and fixation effects. In addition, carriage bolts have high strength and good durability, ensuring the stability and safety of the connection.
2: What are the application scenarios for Steel Carriage Bolts?
Answer: Carriage bolts are widely used in situations requiring medium and low-speed connections, such as automobiles, semi-trailer connection points, bridges, etc. In addition, because its head is smooth and difficult to hook on other objects, carriage bolts are also commonly used in agricultural machinery legs, wall panels and other occasions.
FAQ
1. Provide steel carriage bolt product catalog and specifications that comply with AS1390 standards to help customers understand the performance and application scope of the product.
2. If customers have special needs, manufacturers can provide customized production services according to AS1390 standards and produce according to specifications provided by customers. Provide personalized design services, such as changing the shape, size, etc. of carriage bolt heads to meet customers' special needs. Providing samples and testing services.
3. If necessary, provide customers with training on AS1390 standards, carriage bolt use and maintenance, to improve customers' understanding of the product and operational capabilities.
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