Square Neck Carriage Bolts

Square Neck Carriage Bolts GB 12 is a specially designed bolt mainly used in high-strength fastening applications. Make the head into a hemispherical shape to make the head smoother and less likely to hook onto other objects. A square neck is made under the head. This design ensures that the bolt will not rotate due to the square neck when the nut is tightened, increasing the stability of the connection. Since its head is semi-circular and has no grooves or internal hexagonal design that can be used as a power tool, it can also play an anti-theft role during the actual connection process. Due to its special design and high strength, Square Neck Carriage Bolts is widely used in situations that require high-strength fastening, such as automobiles, textile machines, flour machines, lifeboats, etc.

Pictures

Product drawing

Product Specification

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.

Certification

Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification through the scientific management of leaders of various departments and the pursuit of high quality for bolts and other fasteners. In addition, the laboratory owned by Star Company has obtained the certification in 2017. It passed the national CNAS certification in 2018, and the company passed the European CE certification in 2018.

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.

Exhibition

Jinan Star actively participates in various exhibitions in the fastener industry. On the one hand, it expands its customer base, and on the other hand, it keeps up with the development trend of the fastener industry, understands customer needs, and then makes improvements in quality, service, etc.

Service

1. Square Neck Carriage Bolts production: The main service of bolt manufacturers is the production of various types of bolt products. For example, steel structural bolts, anchor bolts, high strength bolts, etc. These products are widely used in construction, machinery, transport and other fields. Manufacturers will produce according to customer needs and in accordance with national standards or industry standards.

2. We provide high-quality services to ensure that Square Neck Carriage Bolts can be transported safely and efficiently from the manufacturer to your required destination and comply with relevant international trade regulations and standards.

3. Our company will also negotiate with customers on price, delivery date and other contract terms to ensure that the interests of both parties are protected.

4. High cost performance: a wide range of parts selection, supplied by professional factories, and competitive prices.

5. Customization services: In addition to standard products, bolt manufacturers can also provide customized services. According to customers' special needs, such as specific size, material, performance, etc., manufacturers can customize and produce bolt products that meet the requirements.