GB-T 7244 Heavy Type Single Coil Spring Lock Washers
Product: GB-T 7244 Heavy Type Single Coil Spring Lock Washers
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 7244 heavy-duty single-turn spring lock washer (often referred to as GB7244 heavy-duty spring washer) is a specially designed fastener mainly used to improve the anti-loosening performance of bolted connections. The design of GB7244 heavy-duty spring washer is thicker and larger than ordinary spring washers, which makes it have a stronger anti-loosening effect. When the connection force of the bolt or nut is loosened, due to the elastic recovery ability of the spring washer, it will return to its original shape, allowing the force of the connecting fastener to be restored.
Pictures
Product drawing
Product Specification
Size | Φ6 | Φ8 | Φ10 | Φ12 | Φ14 | Φ16 | Φ18 | Φ20 | Φ22 | Φ24 | Φ27 | Φ30 | Φ33 | Φ36 | |
d | min | 6.1 | 8.1 | 10.2 | 12.2 | 14.2 | 16.2 | 18.2 | 20.2 | 22.5 | 24.5 | 27.5 | 30.5 | 33.5 | 36.5 |
max | 6.68 | 8.68 | 10.9 | 12.9 | 14.9 | 16.9 | 19.04 | 21.04 | 23.34 | 25.5 | 28.5 | 31.5 | 34.7 | 37.7 | |
h | min | 1.65 | 2.25 | 2.85 | 3.3 | 3.9 | 4.6 | 5.1 | 5.8 | 6.3 | 6.8 | 7.7 | 8.7 | 9.6 | 10.5 |
max | 1.95 | 2.55 | 3.15 | 3.7 | 4.3 | 5.0 | 5.5 | 6.2 | 6.9 | 7.4 | 8.3 | 9.3 | 10.2 | 11.1 | |
b | min | 2.45 | 3.0 | 3.6 | 4.1 | 4.6 | 5.1 | 5.6 | 6.1 | 6.9 | 7.2 | 8.2 | 9.0 | 9.9 | 10.7 |
max | 2.75 | 3.4 | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.7 | 7.5 | 7.8 | 8.8 | 9.6 | 10.5 | 11.3 | |
H | min | 3.6 | 4.8 | 6.0 | 7.0 | 8.2 | 9.6 | 10.6 | 12.0 | 13.2 | 14.2 | 16.0 | 18.0 | 19.8 | 21.6 |
max | 4.5 | 6.0 | 7.5 | 8.75 | 10.25 | 12.0 | 13.25 | 15.0 | 16.5 | 17.75 | 20.0 | 22.5 | 24.75 | 27.0 | |
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 customized services for GB7244 spring washers of different specifications according to customer needs.
2. If you want to order in large quantities, we provide stable supply capacity and preferential prices.
3. Provide technical parameters and installation instructions for GB7244 spring washers to ensure your correct use of GB7244 spring washers.
4. Ensure that the supplied GB7244 spring washers comply with national standards and provide corresponding quality certification documents.
FAQ
1. Can I choose the specifications of GB7244 spring washer?
Answer: Of course, GB7244 spring washers have a wide range of specifications and are suitable for bolted connections of different sizes. We can customize it according to your usage environment and requirements.
2. How to correctly install the GB7244 spring washer? What should you pay attention to when using it?
Answer: During installation, ensure a tight fit between the spring washers, bolts and nuts and avoid being too tight or too loose. During use, the condition of the spring washer should be checked regularly to ensure that it has good elasticity. If it is damaged or deformed, it should be replaced in time.
Question: How do you guarantee the quality and performance of GB7244 spring washer?
Answer: We produce and test in strict accordance with national standards to ensure that the quality and performance of GB7244 spring washers meet the requirements. At the same time, we provide quality certification documents to prove the compliance and reliability of the products.
About customized services:
Question: If I have special needs, can customized services be provided?
Answer: Yes, we provide customized services. If you have special needs, such as special specifications, materials or surface treatments, we can customize production according to your requirements.
Regarding availability and pricing:
Question: Can you guarantee the stability of supply and favorable price?
Answer: We specialize in the production of fastener products and have 60 years of production experience. We have stable supply capabilities and abundant inventory, which can ensure the stability of supply. At the same time, we provide corresponding price concessions and preferential policies based on different purchase volumes and cooperative relationships.
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