loading

20 years professional hardware manufacturer - JM Hardware

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 1
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 2
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 3
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 4
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 5
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 6
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 7
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 1
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 2
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 3
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 4
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 5
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 6
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 7

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes

JM Hardware® High-Quality ASTM A490 U Bolts are strong, durable fasteners made from premium materials to meet tough industrial standards. They come in custom sizes to fit specific needs, ensuring a secure and long-lasting hold. These bolts are perfect for heavy-duty applications requiring high strength and reliability.
Inquiry

Product advantages

JM Hardware® High-Quality ASTM A490 U Bolts are crafted from premium-grade materials that ensure exceptional strength and durability for heavy-duty applications. With custom sizing options available, these bolts provide precise fitment and reliable performance in demanding construction and industrial environments. Key features include corrosion resistance, high tensile strength, and adherence to strict ASTM A490 standards, making them ideal for securing structural connections with confidence.

Team strength

Our dedicated team at JM Hardware® embodies unmatched expertise and commitment, ensuring top-tier quality for every ASTM A490 U bolt we deliver. Combining extensive industry experience with rigorous quality control, our professionals expertly manufacture durable, high-strength bolts tailored to your custom size requirements. This collective strength guarantees reliability and performance in critical applications, reflecting our passion for excellence and customer satisfaction. With a focus on innovation and precision, our team continuously enhances product standards, making JM Hardware® your trusted partner for durable, dependable fastening solutions that stand the test of time. Together, we build strength you can rely on.

Why choose us

Team Strength: At JM Hardware®, our team is the backbone of delivering superior ASTM A490 U Bolts that combine durability and precision. Our skilled engineers and quality control experts collaborate closely to ensure each bolt meets stringent industry standards, providing you with reliable, high-performance products. Leveraging years of experience and advanced manufacturing processes, our team customizes sizes to perfectly fit your project needs. Committed to excellence, innovation, and customer satisfaction, we ensure every bolt supports your toughest applications with unwavering strength and consistency. Trust in our team’s expertise to deliver lasting value and dependable hardware solutions every time.

Product Introduction


U bolts available in a range of sizes and finishes to support different loads, torque requirements and environments.

A U-bolt is an industrial fastener in the shape of the letter U with two threaded arms (or legs) extending from a curved base. U bolts are typically used to support pipework or to attach a part to a pole, beam or wall, where the “u” shape keeps it firmly in place, adding stability to the support.

The threaded ends are designed for use with washers and screws, and can also be used with a crosspiece spanning both threaded arms of the bolt, to make it more secure in certain settings and uses. U-bolts are designed to be inserted through holes that have already been drilled or punched.
Often used as framing fasteners and anchors for foundations and roofs, pipe and conduit holders and bolts for motor and engine shaft components.





Different Types for Stud Bolts Available at JM Hardware®


As a reputable U bolt manufacturer, we recognize that U bolts go by different names across industries, depending on the application. Common names include:

Pipe U bolts

Round U bolts

Square U bolts (for square pipes and channels)

Heavy-duty U bolts

Custom U  bolts  (customized to specific dimensions or finishes)


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 8                
Round U bolts


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 9                
Pipe U bolts


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 10                
Square U bolts (for square pipes and channels)




JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 11                
Custom U bolts (customized to specific dimensions or finishes)
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 12                
V Bolt


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 13                

Heavy-duty U bolts

Materials Available at JM Hardware® Used in U Bolt Manufacturing


At JM Hardware®, we offer stud bolts in a wide variety of materials to ensure optimal performance in different environments, including:

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 14                
Carbon Steel

Commonly used for general-purpose applications. Offers good strength and affordability.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 15                
Stainless Steel (SS304, SS316, SS316L, etc.)

Ideal for applications requiring corrosion resistance, such as marine environments or chemical processing plants.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 16                
Galvanized Steel

Provides enhanced corrosion resistance for outdoor use, especially in environments with moisture exposure.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 17                
Alloy Steel

Known for its strength and heat resistance, used in high-stress environments.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 18                
Brass

 Resistant to corrosion and suitable for certain plumbing and electrical applications.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 19                
Duplex and Super Duplex Stainless Steel

Offers high strength and superior corrosion resistance in chloride-rich environments like marine applications


Surface Treatments  Available at JM Hardware®

To enhance durability and meet specific project requirements, our U bolt manufacturer facility offers various surface treatments, including:


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 20                
Zinc Plated

Provides moderate corrosion resistance and is typically used for indoor applications.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 21                
Hot-Dip Galvanizing

Offers enhanced protection against corrosion, ideal for outdoor and marine environments.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 22                
Black Oxide

Provides a sleek finish with minimal corrosion resistance, suitable for indoor or low-humidity environments.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 23                
Teflon (PTFE) Coating

Provides chemical resistance and excellent protection against corrosion in harsh environments, especially in the oil & gas industry.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 24                
Nickel Plating

Adds a polished finish with moderate corrosion resistance, often used for decorative applications

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 25                
Phosphate Coating

Commonly used in automotive and machinery applications for its anti-galling and corrosion-resistant properties.


These finishes allow our U bolt factory facility to cater to a variety of environments and application needs, ensuring optimal performance.

Grades of U Bolts Available at JM Hardware®

U bolts are available in several grades, which indicate their strength and mechanical properties. Common grades include:

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 26                
Grade 4.8, 8.8, 10.9, 12.9 (Carbon Steel)


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 27                
ASTM A193 Grade B7


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 28                
ASTM A307


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 29                
ASTM A304, A316 (Stainless Steel Grades)


               

Our U bolt manufacturer facility ensures all grades meet strict industry standards and are suitable for a wide range of applications


Standards for U Bolts Available at JM Hardware®


As a professional U bolt manufacturer, we adhere to various international standards to ensure quality, safety, and reliability in our products. Common standards include:

ASTM  (American Society for Testing and Materials): Sets specifications for material, mechanical properties, and testing methods.

ISO (International Organization for Standardization): International standards that ensure consistency  and quality.

DIN (Deutsches Institut für Normung): German standards that define dimensional and  material properties for U bolts.

BS (British  Standards):   Specifications for the UK and European markets.

SAE (Society of Automotive Engineers): Common in the automotive industry, ensuring durability and      performance under stress.

At JM Hardware®, we are a U bolt manufacturer dedicated to meeting these standards, ensuring our U bolts can be used in various industrial applications.


Common Projects and Usage Scenarios


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 30                
Oil & Gas Industry

Used in flanged connections, pressure vessels, and pipelines.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 31                
Plumbing and Piping

U bolts securely hold pipes in place, preventing movement or vibrations

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 32                
Construction Industry

Anchor bolts and threaded rods are commonly used in concrete and steel structures

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 33                
Power Plants

Stud bolts secure turbines, boilers, and pressure vessels.

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 34                
HVAC Systems

sed to secure ductwork, ensuring safe and stable installations in heating, ventilation, and air conditioning systems

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 35                
Electrical Systems

Used to secure ductwork, ensuring safe and stable installations in heating, ventilation, and air conditioning systems


As a reliable U bolt manufacturer, we are experienced in providing U bolts for these and other specialized applications.


Production equipment
       
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 36
Various punche
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 37
   Multi-station autonmatic cold header
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 38
Automatic shamfering machine
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 39
   Cutting machine
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 40Thread rolling machine

   


                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 41rolling machine2 
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 42
Large heat treatment  line    
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 43
CNC machine tool    
Testing Equipment
       
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 44

   Tensile Strength Testing


                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 45

Hardness Testing


                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 46
   Corrosion Resistance Testing 
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 48
Mirco hardness tester   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 49
   Impact specimen notch projector 
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 50   Magnetic particle flaw detector
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 51Grinding machine, cutting machine
   
Test report
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 52                
SGS  testing report --310S bolt nut
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 53                
Third-party testing report-P1
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 54                
Third-party testing report-P2
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 55                

JM Hardware® testing report


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 56                

Test report by third party 

ab-anchor boltl 8.8-1

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 57                

Test report by third party 

ab-anchor bolt 8.8-2

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 58                

Test report by third party 

ab-anchor bolt 8.8-3






Packaging available from JM Hardware®
   
           
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 59




           
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 60


      

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 61



   
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 62



   
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 63



   
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 64



   

  



Why Choose Us
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 65

Registered trademarks

RegisterJM in USA,EU ,UK,Quality Assuranc


JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 66

Strong R&D Capability

Successfully developed 680+ new products in past 16 years

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 67

Rich Industry Experience

JM has the rich experience to supply the high quality fasteners to Project contractor

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 68

Mature & professional service teams

Provides 24/7 online and offline services for you,70%stuff have 5+ working experience in JM

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 69

Rich export experience

15+ years exported to 70+ countries

JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 70

Supply one-stop service & DDP term

Help clients purchase other products,realize door-to-door service to make international procurement more convenient


Certificate
       
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 71ISO certificate
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 72 USA Trade Mark     
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 73EU Trade Mark
     
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 74UK Trade Mark
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 75SGS Certificate
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 76Alibaba 15 Years Supplier
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 77Certificate
   
                       
JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 78
   Certificate
Valued Partners


JM Hardware @ has exported its hardware parts to over 85 countries around the world.

We will make unremitting efforts to provide hardware parts with high quality and reasonable prices for our customers.

    JM Hardware® High-Quality ASTM A490 U Bolts – Durable, Custom Sizes 79



At JM Hardware®, we are committed to being the U bolt manufacturer you can rely on. Whether you need standard or custom U bolts, our team is here to provide you with fast, reliable, and high-quality solutions. Contact us today to learn more about our products or to request a quote.




       




Contact us
we welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.
Our address
Add: Rm.27202, No.295 South Lingyan Road, Pudong,Shanghai,P.R.C

Contact person: xarella.huang
Whatsapp: +86 13681923533
Wechat:+86 18621005605
Contact with us

Since our establishment in 2006, JM has been adhering to the mission of creating maximum value for customers by providing differentiated services, and making a positive contribution to the society.

Copyright © 2026 Shanghai Jian & Mei Industry and Trade Co., Ltd. | Sitemap
Customer service
detect