DIN 939 Double-ended Bolts bm=1.5d
Product: DIN 938 Double-ended Bolts bm=1d
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
The DIN 939 standard is the holed bolt standard formulated by the German Standardization Association. It is especially suitable for holed bolts whose length does not exceed 10 times the diameter. The bm=1.5d stud bolt is one of the specifications. The bm=1.5d stud bolt has threads on both ends and a polished rod in the middle. This kind of stud bolt is usually used for the connection between the cast iron connected parts and the steel connected parts. One type of connector has an internally threaded hole, while the other type of connector has a through hole.
Pictures
Product drawing
Product Specification
Size | M3 | M4 | M5 | M6 | M7 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 | |
bm | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 18.0 | 20.0 | 22.0 | 24.0 | 25.0 | 30.0 | 32.0 | 35.0 | 38.0 | 42.0 | 45.0 | 48.0 | 52.0 | |
b | a | 12 | 14 | 16 | 18 | 20 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 110 |
b | 18 | 20 | 22 | 24 | 26 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | 116 | |
c | / | / | / | / | / | / | 45 | 49 | 53 | 57 | 61 | 65 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | 129 | |
ds | max | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 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 |
min | 2.86 | 3.82 | 4.82 | 5.82 | 6.78 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | 26.67 | 29.67 | 32.61 | 35.61 | 39.61 | 41.61 | 44.61 | 47.61 | 51.54 | |
x1(d) | 1.25 | 1.75 | 2.0 | 2.5 | 2.5 | 3.2 | 3.8 | 4.3 | 5.0 | 5.0 | 6.3 | 6.3 | 6.3 | 7.5 | 7.5 | 9.0 | 9.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.5 | 12.5 | |
x2(d) | 0.7 | 0.7 | 0.9 | 1.0 | 1.25 | 1.6 | 1.9 | 2.2 | 2.5 | 3.2 | 3.2 | 3.2 | 3.8 | 3.8 | 4.5 | 4.5 | 5.0 | 5.0 | 5.5 | 5.5 | 6.3 | 6.3 | ||
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. We produce bm=1.5d stud bolts that meet DIN 939 standards and provide products with different materials, specifications and surface treatments according to customer needs.
2. Customized packaging and labeling services. Customized customers need the length, diameter, material, etc. of DIN 939 standard bm=1.5d stud bolts.
3. Help customers to correctly apply bolts and assist customers in selecting DIN 939 standard bm=1.5d stud bolts.
4. Track order status to ensure customers understand order progress.
FAQ
1.What materials can you produce for DIN 939 standard bm=1.5d stud bolts?
Steel, stainless steel, etc., you can inform our sales team of your needs and applicable scenarios. We will answer your questions about the impact of material selection on bolt performance, such as strength, corrosion resistance, etc.
2. I'm not sure yet what specs apply to me, can you help?
Of course, we will provide detailed specification sheets or selection guides to help you choose the appropriate DIN 939 standard bm=1.5d stud bolts according to your application needs.
3. How to install?
We provide installation instructions or video tutorials to ensure you install the bolts correctly.
