DIN 938 bm=1d Double-ended Bolts
Product: DIN 938 bm=1d Double-ended 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
DIN 938 bm=1d Double-ended Bolts are fasteners that comply with the DIN 938-2012 standard. Specifically, it is characterized by a thick rod and bm=1d, where bm represents a certain dimensional parameter of the bolt, and 1d usually means that the parameter is equal to the thread diameter (d) of the bolt. This type of stud has threads on both ends and can be screwed into two parts with through holes to fasten the two parts together. Due to its double-ended design, it is particularly suitable for situations where two non-detachable parts need to be connected or where bi-directional tension is required.
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
Jinan Star Company specializes in the production of fastener products. Our bolts, nuts and other products are widely used in machinery, railways, automobiles, construction, electrical, bridges, communications, firefighting and other industries.
Workshop
The workshop of Jinan Star Fastener Co., Ltd. is the core area of the company's production and manufacturing, with advanced production equipment. The reasonable layout of the workshop and the scientific production process ensure the efficient production and high-quality output of fastener products.
Certification
Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification through the scientific management of leaders of various departments and the pursuit of high quality for bolts and other fasteners. In addition, the laboratory owned by Star Company has obtained the certification in 2017. It passed the national CNAS certification in 2018, and the company passed the European CE certification in 2018.
Testing Equipment
Jinan Star Fastener Company attaches great importance to product quality and is equipped with complete quality inspection equipment, such as tensile testing machines, torque testers,metallographic microscopes, optical projectors, salt spray test chambers, coating thickness gauges, etc., which are used to test the tensile strength and elongation of fastener products and evaluate the mechanical properties of products. These equipment ensure that every link from raw materials to finished products can be strictly controlled in quality.
Production equipment
In order to meet the needs of different customers, the company has introduced a series of advanced production equipment, such as multi-station cold heading machines, thread rolling equipment, heat treatment equipment, shot blasting machines, sand blasting machines, electroplating lines and other surface treatment equipment, and fully automatic packaging equipment. These equipment not only improve production efficiency, but also ensure the consistency and stability of product quality.
Packing
Service
1. If you need DIN 938 bm=1d stud bolts of different lengths, diameters, strength levels, etc., we will provide you with customized production.
2. Answer customers’ questions about the technical parameters, applicable fields, usage methods, etc. of DIN 938 bm=1d stud bolts.
3. Control the quality production process to ensure that products comply with DIN 938-2012 standards and meet customer quality requirements.
4. Complete after-sales service system, such as installation guidance, use and maintenance suggestions, etc.
FAQ
1. Question: What does b1=1d in DIN 938 bm=1d mean?
Answer: b1 represents a certain size parameter of the bolt, and 1d represents that this parameter is equal to the thread diameter (d) of the bolt. This design gives the bolts stronger load-bearing capacity and a more stable connection effect.
2. Question: In what situations are DIN 938 bm=1d stud bolts suitable?
Answer: This bolt is suitable for occasions where two non-detachable parts need to be connected or where two-way tension is required, such as bridges, buildings, mechanical equipment, etc.
3.Q: How to ensure the quality and performance of the product?
Answer: We adopt strict quality control processes, from raw material procurement, production process to finished product inspection, to ensure that products comply with DIN 938-2012 standards and meet customer needs.
4. Question: Can the bolts be customized as per my needs?
Answer: Absolutely. We offer product customization services and can produce products according to your specific needs, including bolt length, diameter, strength grade, etc.
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