GB-T 5785 Hexagon Head Bolts-Fine Pitch Thread
Product: GB-T 5785 Hexagon Head Bolts-Fine Pitch Thread
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,Stainless
Export country: USA, Japan, Australia, Europe and so on
Support customer customization
GB/T 5785 fine-thread hexagon head bolts are bolts with specific specifications. The GB/T 5785 standard specifies the dimensions, mechanical properties and other related requirements of fine-thread hexagon head bolts. Fine thread means that the thread spacing of the bolt is smaller, which helps to increase the contact area between the bolt and the nut and improve the tightness and reliability of the connection.
Pictures
Product drawing
Product Specification
Size | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 | M56 | M60 | M64 | |
P | 1.0 | 1.0 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2.0 | 2.0 | 2.0 | 2.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
da max | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 | 24.4 | 26.4 | 30.4 | 33.4 | 36.4 | 39.4 | 42.4 | 45.6 | 48.6 | 52.6 | 56.6 | 63.0 | 67.0 | 71.0 | |
ds | max | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 18.0 | 20.0 | 22.0 | 24.0 | 27.0 | 30.0 | 33.0 | 36.0 | 39.0 | 42.0 | 45.0 | 48.0 | 52.0 | 56.0 | 60.0 | 64.0 |
min | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | 26.48 | 29.48 | 32.38 | 35.38 | 38.38 | 41.38 | 44.38 | 47.38 | 51.26 | 55.26 | 59.26 | 63.26 | |
e min | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | 93.56 | 99.21 | 104.86 | |
k | max | 5.45 | 6.58 | 7.68 | 8.98 | 10.18 | 11.715 | 12.715 | 14.215 | 15.215 | 17.35 | 19.12 | 21.42 | 22.92 | 25.42 | 26.42 | 28.42 | 30.42 | 33.5 | 35.5 | 38.5 | 40.5 |
min | 5.15 | 6.22 | 7.32 | 8.62 | 9.82 | 11.285 | 12.285 | 13.785 | 14.785 | 16.65 | 18.28 | 20.58 | 22.08 | 24.58 | 25.58 | 27.58 | 29.58 | 32.5 | 34.5 | 37.5 | 39.5 | |
r min | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.2 | 1.2 | 1.6 | 1.6 | 2.0 | 2.0 | 2.0 | |
s | max | 13.0 | 16.0 | 18.0 | 21.0 | 24.0 | 27.0 | 30.0 | 34.0 | 36.0 | 41.0 | 46.0 | 50.0 | 55.0 | 60.0 | 65.0 | 70.0 | 75.0 | 80.0 | 85.0 | 90.0 | 95.0 |
min | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | 40.0 | 45.0 | 49.0 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | 82.8 | 87.8 | 92.8 | |
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 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, 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,bolts product testing, etc. are all completed in the company.
Packing
Service
1. Provide fine thread hexagonal head bolts that comply with GB/T 5785 standards.
2. Provide customized services for GB/T 5785 fine thread hexagon head bolts.
3. Provide technical guidance on the use, installation and maintenance of GB/T 5785 fine thread hexagon head bolts.
4. Accept customer feedback and complaints and continuously improve the product and service quality of GB/T 5785 fine thread hexagon head bolts.
FAQ
1. Question: How to choose the appropriate GB/T 5785 fine thread hexagon head bolt?
Answer: When selecting the specifications and grades of GB/T 5785 fine-thread hexagon head bolts, multiple factors need to be considered, such as the thickness of the connecting material, the load to be endured, the use environment, etc. It is recommended that customers provide detailed usage scenarios and requirements, and our sales staff will assist you in selection and recommendation.
2. Question: What are the advantages of fine thread hexagon head bolts compared with ordinary bolts?
Answer: Fine thread hex head bolts have smaller thread spacing, which helps increase the contact area between the bolt and the nut, improving the tightness and reliability of the connection. In addition, fine-thread bolts have better resistance to loosening when subjected to vibration and impact loads.
3. Question: How to ensure that the purchased bolts comply with GB/T 5785 standards?
Answer: The fine thread hexagon head bolts produced by our manufacturer are produced and inspected in strict accordance with the GB/T 5785 standard. You can buy with confidence. If necessary, we can provide relevant product quality certification documents and test reports.
