GB-T 70.2 Hexagon Socket Button Head Screws
Product: GB-T 70.2 Hexagon Socket Button Head Screws
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
GB/T 70.2 Hexagon socket head screw is an important fastener. The hexagon socket head screw is a screw with an inner hexagonal shape and a flat head design. In the screw industry, it is also known as "flat cup", "hexagon socket round cup" or "hexagon socket flat head bolt". In addition to beautiful appearance, hexagon socket head screws also have the advantages of long service life, high hardness, corrosion resistance, and no rust. Of course, the premise is to choose to buy quality products.
Pictures
Product drawing
Product Specification
Size | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | |
P | 0.35|0.5 | 0.5|0.7 | 0.5|0.8 | 0.75|1 | 1|1.25 | 1|1.25|1.5 | 1|1.25|1.5|1.75 | 1|1.5|2 | |
da max | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 17.7 | |
dk | max | 5.7 | 7.6 | 9.5 | 10.5 | 14 | 17.5 | 21 | 28 |
min | 5.4 | 7.24 | 9.14 | 10.07 | 13.57 | 17.07 | 20.48 | 27.48 | |
e min | 2.303 | 2.873 | 3.443 | 4.583 | 5.723 | 6.863 | 9.149 | 11.429 | |
k | max | 1.65 | 2.2 | 2.75 | 3.3 | 4.4 | 5.5 | 6.6 | 8.8 |
min | 1.4 | 1.95 | 2.5 | 3 | 4.1 | 5.2 | 6.24 | 8.44 | |
r min | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | |
s | max | 2.08 | 2.58 | 3.08 | 4.095 | 5.14 | 6.14 | 8.175 | 10.175 |
min | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | |
t min | 1.04 | 1.3 | 1.56 | 2.08 | 2.6 | 3.12 | 4.16 | 5.2 | |
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 company has more than 300 production equipment.The product production process includes: Annealing, shot blasting, cold heading, thread rolling, heat treatment, galvanizing, finished product testing, packaging, etc. are all completed in the company.
Packing
Service
1. Provide hexagon socket head screws that comply with GB/T 70.2 standards.
2. Assist customers to choose the GB/T 70.2 hexagon socket head screws that are most suitable for their applications.
3. Provide customized screw solutions according to customers' special needs.
4. Fast delivery service, providing expedited production and shipping services.
5. For product quality problems with GB/T 70.2 hexagon socket head screws, we provide return and exchange services or solutions.
FAQ
1. Do your hexagon socket head screws fully comply with the GB/T 70.2 standard?
Answer: Yes, our screws are produced strictly in accordance with GB/T 70.2 standards and comply with national standards.
2. What materials do you provide for GB/T 70.2 hexagon socket head screws?
Answer: We offer screws in a variety of materials, depending on your application needs and budget.
3. What surface treatment options are available for your GB/T 70.2 hexagon socket head screws?
Answer: We provide a variety of surface treatment options, including environmentally friendly electroplating methods such as environmentally friendly white zinc, as well as other surface treatment methods such as natural color, blackening, galvanizing, and whitewashing.
4. I need to customize screws with special specifications, can you satisfy them?
Answer: Of course. We offer a customization service and can produce screws of specific specifications and materials according to your special needs.
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