JM Hardware® Custom U Bolt
JM Hardware Custom Metric Bolts – Made-to-Order Materials & Finishes
JM Hardware Custom Metric Bolts are made-to-order fasteners in metric sizes with choice of materials and finishes. Pick from stainless steel, alloy steel, brass, titanium, and specialty alloys, and from coatings like zinc, black oxide, galvanizing, or PTFE. They’re made to your length, thread, and tolerance requirements for reliable fit and performance.
Usage scenarios:
1) Use in industrial and automotive assemblies, machinery repairs, and aerospace parts where strength and precise fit matter.
2) Ideal for marine, outdoor, and chemical environments that need corrosion-resistant materials and protective finishes.
3) Great for custom furniture, architectural fixtures, restorations, prototypes, and low-volume production where matching size and appearance is important.
Usage scenarios:
1) Use in industrial and automotive assemblies, machinery repairs, and aerospace parts where strength and precise fit matter.
2) Ideal for marine, outdoor, and chemical environments that need corrosion-resistant materials and protective finishes.
3) Great for custom furniture, architectural fixtures, restorations, prototypes, and low-volume production where matching size and appearance is important.
Product advantages
JM Hardware’s custom metric bolts are made-to-order using precision CNC machining, strict ISO quality controls, and a selection of engineered materials and finishes to meet OEM specifications and industry standards. Designed for secure, high-strength fastening in automotive, construction, and industrial applications, the bolts offer tailored thread profiles, head styles, heat-treated alloys, and corrosion-resistant coatings such as stainless steel, zinc plating, black oxide, hot-dip galvanizing, and PTFE to ensure longevity and reliable performance. Features and advantages include tight tolerances and custom dimensions for perfect fitment, fast prototyping and scalable production runs, full traceability and batch testing for quality assurance, and competitive lead times and pricing that reduce downtime and total lifecycle costs.
We serve
We serve manufacturers, engineers, maintenance teams and designers who require precision metric fasteners made to order. Our custom metric bolts deliver exact threads, diameters and tolerances across a wide choice of materials and finishes—stainless steels, alloy steels, titanium, brass and specialty coatings—for corrosive, high‑strength, aesthetic or lightweight applications. From single prototypes to full production runs, we provide rapid quotes, engineering support, CAD‑friendly specifications, lot traceability and tight quality inspection. The result: reliable fit, consistent performance and on‑time supply that minimizes downtime, helps meet regulatory requirements and simplifies sourcing for OEMs, contractors, marine, aerospace and industrial customers.
Why choose us
We serve engineers, fabricators, maintenance teams, and OEMs with made-to-order metric bolts tailored for precise fits and long-term performance. Our core attributes include exact metric tolerances, a wide selection of materials (stainless steels, alloy steels, brass, specialty metals), customizable lengths, heads, and high-quality finishes (passivation, plating, coating). Value attributes emphasize dependable lead times, batch traceability, QA inspection reports, and scalable production for prototypes through high-volume runs. Technical guidance, drawings review, and rapid samples accelerate design validation. Combined, these capabilities reduce assembly risks, lower lifecycle costs, and ensure components arrive on spec—ready for immediate installation and backed by responsive customer support.
Product Introduction
At JM Hardware®, we take pride in offering custom bolt solutions tailored to your specific needs. Custom bolts are a versatile fastening solution designed to meet unique project requirements, offering flexibility in material selection, surface finish, and functionality.
Material and Surface Finish:
Custom bolts can be manufactured from a variety of materials, including stainless steel, carbon steel, alloy steel, brass, and aluminum, among others. The choice of material depends on factors such as environmental conditions, load requirements, and corrosion resistance. Additionally, custom bolts can be finished with coatings such as zinc plating, galvanization, black oxide, or powder coating to enhance durability and appearance.
Functionality:
Custom bolts serve a multitude of purposes across various industries and applications. Whether you need structural bolts for heavy-duty construction projects, precision bolts for machinery assembly, or corrosion-resistant bolts for marine environments, we can tailor the design to meet your specific requirements. From standard custom u bolts to specialized flange bolts, we offer a wide range of options to suit your needs.
Product Display
JM Hardware® Custom U Bolt
JM Hardware® Custom U Bolt
Quality Control
JM Hardware conducts product quality control in strict accordance with ISO 9001 standards to ensure that our products meet high quality standards. Below are our five quality control steps:
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Incoming material control
We carry out strict incoming material control by conducting dimensional tests on each batch of raw materials and checking the raw material reports from the steel mills. This ensures that the raw materials we use are within specification and provide a reliable basis for production.
We carry out strict incoming material control by conducting dimensional tests on each batch of raw materials and checking the raw material reports from the steel mills. This ensures that the raw materials we use are within specification and provide a reliable basis for production.
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First part control
After the mold assembly is completed, we conduct a thorough inspection of the first production part and make detailed records. Only qualified first parts can be released to start mass production. This step ensures that the quality of the product meets the standard at the beginning.
After the mold assembly is completed, we conduct a thorough inspection of the first production part and make detailed records. Only qualified first parts can be released to start mass production. This step ensures that the quality of the product meets the standard at the beginning.
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Self-inspection by workers during mass production
In the mass production process, we require the workers of each machine to carry out self-inspection every hour. If any substandard product is found, we will immediately pick or scrap the production within this hour until the problem is solved and meets the standard of conformity, and then we can continue the production. This self-inspection mechanism helps to find and solve problems in time during the production process.
In the mass production process, we require the workers of each machine to carry out self-inspection every hour. If any substandard product is found, we will immediately pick or scrap the production within this hour until the problem is solved and meets the standard of conformity, and then we can continue the production. This self-inspection mechanism helps to find and solve problems in time during the production process.
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QC inspection during mass production
In addition, every two hours, the quality inspection personnel will carry out random inspection on the products of each machine. Only qualified products can continue to flow into the next production stage. If non-conforming products are found, we will take the same selection or scrapping measures and ensure that the problem is properly handled. This helps provide additional quality assurance.
In addition, every two hours, the quality inspection personnel will carry out random inspection on the products of each machine. Only qualified products can continue to flow into the next production stage. If non-conforming products are found, we will take the same selection or scrapping measures and ensure that the problem is properly handled. This helps provide additional quality assurance.
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Finished product control
Finally, after each batch of finished product is made, we conduct random inspections in proportion to the order. Qualified products will be packaged and put into storage, while unqualified products will be returned for further analysis and rectification. We insist on ensuring that the quality of our products meets high standards so that we can provide reliable products to our customers.
Finally, after each batch of finished product is made, we conduct random inspections in proportion to the order. Qualified products will be packaged and put into storage, while unqualified products will be returned for further analysis and rectification. We insist on ensuring that the quality of our products meets high standards so that we can provide reliable products to our customers.
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Non-conforming goods management
According to the process of JMhardware's non-conforming products handling, pick or scrap. And the problem of rectification and tracking reasons to ensure that non-conforming products will not flow into the market.
According to the process of JMhardware's non-conforming products handling, pick or scrap. And the problem of rectification and tracking reasons to ensure that non-conforming products will not flow into the market.
These quality control measures constitute JM Hardware's quality management system, and we are constantly striving to improve the quality of our products and are committed to meeting the needs of our customers. We believe that quality control is the key to our success.
Production equipment
Testing Equipment
Test report
JM Hardware® provides each batch of products with a finished product test report issued by our laboratory. If you need a test report issued by a third party, please inform us separately. The following two templates are for reference
SGS testing report
Third-party testing report
Packing
Why Choose Us
Registered trademarks
RegisterJM in USA，EU ，UK，Quality Assuranc
Strong R&D Capability
Successfully developed 680+ new products in past 16 years
Rich Industry Experience
JM has the rich experience to supply the high quality fasteners to Project contractor
Mature & professional service teams
Provides 24/7 online and offline services for you,70%stuff have 5+ working experience in JM
Rich export experience
15+ years exported to 70+ countries
Supply one-stop service & DDP term
Help clients purchase other products,realize door-to-door service to make international procurement more convenient
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.
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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.
xarella.huang@jm-fastener.comOur address
Add: Rm.27202, No.295 South Lingyan Road, Pudong,Shanghai,P.R.C
Contact person: xarella.huang
Whatsapp: +86 13681923533
Wechat:+86 18621005605
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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.