DIN 6921 Hex Head Flange Bolts
Product: DIN 6921 Hex Head Flange Bolts
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
Hexagonal flange bolts are fasteners composed of a hexagonal head, a flange plate and a screw rod.Our company specializes in the production of flange face bolts. The detection and testing methods of flange surface bolts include hardness test, tensile test, impact test, torque coefficient test, salt spray test, etc.
Pictures
Product drawing
Product Specification
Size | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | |
P | 0.8 | 1 | 1|1.25 | 1|1.25|1.5 | 1|1.25|1.5|1.75 | 1|1.5|2 | 1|1.5|2 | 1.5|2|2.5 | |
e min | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |
da max | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | |
dc max | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |
ds | max | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | |
Lf max | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |
k max | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |
s | max | 8 | 10 | 13 | 15 | 16 | 18 | 21 | 27 |
min | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | |
r min | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |
Support customer customization | |||||||||
Some introduction about our company
Application
Our products are widely used in mechanical, electrical, automotive, building construction, railways, bridges, steamships, fire protection and communication system, etc.
Workshop
Certification
Through scientific management, Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification. In 2017, the laboratory passed the national CNAS certification. In 2018, the company passed the European CE certification.
Testing Equipment
Our company has a specialized laboratory with digital hardness testers, microscopes, universal testing machines, axial force meters, hydrogen embrittlement detection devices, magnetic particle flaw detectors, metallographic analyzers, carbon and sulfur analyzers and salt spray testing machines, etc. Experimental testing equipment is used to conduct comprehensive testing of the chemical composition of raw materials, product hardness, mechanical properties, coating thickness and corrosion resistance to ensure that all products meet standard requirements and satisfy customers.
Production equipment
Our agency has extra than 300 manufacturing equipment.The product manufacturing system includes: Annealing, shot blasting, bloodless heading, thread rolling, warmness treatment, galvanizing, completed product testing, packaging, etc. are all done in the company.
Packing
Our service:
1.Professional technical support and after-sales service: Star has a professional technical support team to provide customers with comprehensive technical support and problem solving. This includes product use guidance, installation guidance, troubleshooting, etc., to ensure that customers can get timely help and support during use. At the same time, the manufacturer also provides after-sales services such as return and exchange, repair, etc. to solve problems encountered by customers during use.
2.Quality control and testing: Star pays attention to product quality control, and conducts strict quality control in all links from raw material procurement to production and processing, finished product inspection, etc. At the same time, the manufacturer is also equipped with advanced testing equipment to conduct strict testing of the products to ensure that the products meet the relevant standards and customer requirements.
FAQ
1.How do you make me trust you?
We have self-operated import and export rights, and our products are exported to Australia, Japan, Germany and other countries. At the same time, we maintain friendly long-term cooperative relationships with various manufacturers.
2. What is your price?
High quality products and reasonable prices. Please send me an inquiry and I will quote the price immediately for your reference.
3. How do you control your quality?
We require QC to inspect every production link of each batch of goods. We can provide you with MTC and factory certificate after the goods are completed.
4. Can you provide free samples?
For new customers, we can provide standard fastener samples for free, but customers will pay
Courier fees. For old customers, we will send you samples for free and pay the express fee ourselves.
