Black Oxide DIN6921 GB5787 ASME B18.2.1.8 Hex Flange Screw Gr 10.9

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: M5-M20
• Groove: Hexagon
• Connection: Flanged
• Head Style: Round
• Standard: DIN, GB, ANSI, BSW, JIS
• Grade: 10.9
• Transport Package: Box+Carton+Pallet(It Depends
• Specification: M5-M20
• Origin: China
• HS Code: 731819000
• Production Capacity: 10000K/Month

Product Description

Model NO.	M5-M20	Connection	Flanged
Head Style	Hexagonal	Standard	DIN, ANSI, GB
Grade	10.9	Application	Machinery, Chemical Industry, Environmental, Building
Finish	Blank	Supply Capacity	10000K/Month
HS Code	731819000	Inspection	100% QC Steps Inspect Before Shipment
Transport Package	20-25kg/Carton+900kg Pallet	Origin	China

Product Description


The  Carriage  bolt  is Black Oxide DIN6921 GB5787 ASME B18.2.1.8 Hex Flange Screw Gr 10.9. Its shank is threaded. By being used in conjunction with nuts and taking advantage of the frictional and mechanical interlocking effects of the threads, it applies clamping force to two or more components in various mechanical connection and building structure scenarios, thus achieving a stable connection.

 



 

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Company Profile




Hifivehardware has established itself as a leading innovator in the fastener manufacturing industry. With over 15 years of experience, we specialize in producing high-quality, durable fasteners that serve a wide range of industries, from construction and automotive to aerospace and electronics. Our commitment to excellence has positioned us at the forefront of our industry, providing reliable solutions for any fastening need.
Our mission is to provide our clients with fastening solutions that combine strength, precision, and reliability. We strive to exceed customer expectations through continuous innovation, quality excellence, and sustainable practices. Our vision is to become the global standard for quality and innovation in the fastener industry, fostering secure connections worldwide.
As we look to the future,Hifivehardware  aims to expand our product offerings, explore new markets, and continue leading the industry in innovation and sustainability.


 

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CUSTOMER  Q & A--



 

**01 Why is stainless steel sometimes magnetic?**  

304 stainless steel is an austenitic stainless steel. During cold processing, part of the austenite transforms into martensite. Martensite is magnetic, which is why 304 stainless steel is generally non-magnetic or only weakly magnetic. For details, search online for "Why is 304 stainless steel magnetic?"  

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**02 How to identify authentic 304 stainless steel products?**  

1. Use **304-specific testing solution**: No color change indicates authentic 304 stainless steel.  
2. Conduct **chemical composition analysis** or **spectral analysis**.  
3. Perform a **smoke test** to simulate real-world usage conditions.  

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**03 What are the common types of stainless steel?**  

1. **201 stainless steel**: Suitable for dry environments; prone to rusting when exposed to rain.  
2. **304 stainless steel**: Ideal for outdoor or humid environments due to high corrosion resistance, acid resistance, and strength.  
3. **316 stainless steel**: Offers superior corrosion and acid resistance, especially suitable for seawater and chemical environments.  

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