ISO 8677 Large Cup Head Square Neck Bolts

 ISO 8677 Large Cup Head Square Neck Bolts are fasteners with specific design and performance requirements. The head of ISO 8677 Large Cup Head Square Neck Bolts is made into a semi-spherical shape, which makes the bolt head smoother and less likely to hook other objects. A square neck is made under the head to be embedded in the groove of the connected part, thereby reducing the protruding height of the bolt on the surface of the connected part. ISO 8677 Large Cup Head Square Neck Bolts are mainly used in situations where the connected parts are not suitable for hexagonal bolts due to structural restrictions, or where the bolts are required to have a smoother exposed part. They are commonly found in the foot and wall panels of agricultural machinery, and are also widely used in trucks, barges, iron and wood looms and other wooden structures. According to the size of the head, they are divided into ordinary and large semi-circular heads. ISO 8677 Large Cup Head Square Neck Bolts have a larger head diameter but a slightly thinner thickness, which is suitable for situations where a larger bearing surface is required. This type of bolt is a rough bolt, but has high mechanical properties and good durability.

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.

Workshop

The workshop of Jinan Star Fastener Co., Ltd. is the core area of the company's production and manufacturing, with advanced production equipment. The reasonable layout of the workshop and the scientific production process ensure the efficient production and high-quality output of fastener products.

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.

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.

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.

Packing

Service

Professional Manufacturer: All our fasteners are designed and manufactured according to buyers' specifications and performance.

Quality assurance: durability testing and key technology design to improve the service life of fasteners.

Cost-Effectiveness: Wide selection of parts, supplied from professional factories, at competitive prices.

Customize ideal fasteners: Customized service based on provided samples and drawings.

The perfect fastening solution from 60 years of experience to solve your problems: a wide selection of parts.

FAQ

1.About the cooperation process

Question: How do we start cooperation?

Answer: You can contact us through our official website, phone, email or direct visit. We will provide detailed product introduction and quotation according to your needs. After both parties reach an agreement, we can sign a formal cooperation agreement and start production. We will follow up the progress of the order throughout the process to ensure that the product is delivered on time.

2.About Industry Certification

Question: Are your products certified by the industry?

Answer: Yes, our products have passed a number of industry certifications and standard tests, such as ISO 9001 quality management system certification, CE certification, etc. These certifications prove that our products meet international and industry standards and have excellent quality and performance.