ISO 8678 Small Cup Head Short Square Neck Bolts
Product: ISO 8678 Small Cup Head Short Square Neck Bolts-Product Grade B
Property Class:4.6,4.8,5.6,5.8,8.8,10.9,12.9,
A2-70, A4-70,A4-80
Finish:Zinc Plating（Yellow Zinc, Zinc Blue, Rinse Color), Black, Phosphate & Oil, Zinc Phosphate, Hot-dip Galvanized(HDG),Dacromet, Geomet
Material:Steel
Export country: USA, Japan, Australia, Europe and so on
Support customer customization
ISO 8678 round head square neck carriage bolt, also known as round head low square neck bolt, is a fastener. ISO 8678 round head square neck carriage bolt is a bolt manufactured according to ISO 8678 standard, with a round head shape and square neck design. According to ISO 8678 standard, the specifications and sizes of round head square neck carriage bolts may include different diameters (d) and lengths (L). For example, in some versions, the diameter range (d) may be M6 to M16, and the length range (L) may be 30 to 160 mm. The round head design makes the protrusion height of the bolt head on the surface of the connected part smaller, which is suitable for occasions where surface flatness is required. The square neck design allows the bolt to be stuck in the groove during installation, which helps to prevent the bolt from rotating during tightening, and can move parallel in the groove, providing a certain adjustment space. It is suitable for places where the force is not large, so the material is usually softer.
Pictures
Product drawing
Product Specification
Size | M6 | M8 | M10 | M12 | M16 | M20 | |
P | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
dk max | 14.2 | 18 | 22.3 | 26.6 | 35 | 43 | |
ds | max | 6 | 8 | 10 | 12 | 16 | 20 |
min | 5.35 | 7.19 | 9.03 | 10.86 | 14.7 | 18.38 | |
e min | 7.64 | 10.2 | 12.8 | 15.37 | 20.57 | 25.73 | |
k | max | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
min | 3 | 4 | 5 | 6 | 8 | 10 | |
k1 | min | 2.4 | 2.4 | 3.2 | 3.2 | 4.2 | 4.2 |
max | 3 | 3 | 4 | 4 | 5 | 5 | |
s | max | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 5.88 | 7.85 | 9.85 | 11.82 | 15.82 | 19.79 | |
r max | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 | |
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.
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.
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.
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. Professional Manufacturer: All our fasteners are designed and manufactured according to buyers' specifications and performance.
2. Quality assurance: durability testing and key technology design to improve the service life of fasteners.
3. Cost-effectiveness: Wide selection of parts, supplied by professional factories, at competitive prices.
4. Customize ideal fasteners: Customize services based on provided samples and drawings.
5. Perfect fastening solutions with 60 years of experience to solve your problems: Wide selection of parts.
FAQ
1. What is your price?
High quality products and realistic prices. Please send me an inquiry and I will quote you immediately for your reference.
2. Do you accept small orders?
Of course, we can accept any order and we hold large shares of all products.
3. How do you manage quality?
We need QC to inspect every production link of each batch of products. After the product is completed, we can provide you with MTC and factory certificate.4. What is your price? /Can you send a price list?
High quality products and realistic prices. Please send me an inquiry and I will quote you immediately for your reference. /sure. Just leave your email here and we'll send a price list within two business hours.
5. What is your packaging?
We can print customer's brand on the carton. Or we personalize the cartons according to customer needs.
6. What is your charging period?
For famous orders, we can pay by wire transfer, money order, and for small orders or sample orders, we can also accept PayPal and Western Union.
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