Like identity card of each person, chemical composition is the only feature that identifies the specification of material. Lots of steel alloys could be forged, such as 1035 steel, 1045 steel,1020steel, 20CrMnTi, 20Cr, 40Cr, Q235, Q345, 20CrMo, 30CrMo, 35CrMo, 42CrMo, ect. For steel forgings, spectrum analysis is the most widely used method to do material inspection.

Hardness is the measurement of the resistance of a metal to plastic deformation. The process for checking the hardness of a material may vary but it usually consists of the use of an indentation that is measured in a forging. Hardness is the property that shows a materials ability to resist permanent deformation when it is under load. The greater the hardness of a material the greater the material will resist deformation. 
At JM Hardware®, we are able to perform below types of hardness testing: Brinell and Rockwell Hardness Testing.

Tensile testing, also known as tension testing, is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. Properties that are directly measured via a tensile test are ultimate tensile strength, breaking strength, maximum elongation and reduction in area. From these measurements the following properties can also be determined: Young's modulus, Poisson's ratio, yield strength, and strain-hardening characteristics.Uniaxial tensile testing is the most commonly used for obtaining the mechanical characteristics of isotropic materials. Some materials use biaxial tensile testing. The main difference between these testing machines being how load is applied on the materials.

In materials science, the Charpy impact test, also known as the Charpy V-notch test, is a standardized high strain rate test which determines the amount of energy absorbed by a material during fracture. Absorbed energy is a measure of the material's notch toughness. It is widely used in industry, since it is easy to prepare and conduct and results can be obtained quickly and cheaply. A disadvantage is that some results are only comparative

Nondestructive Testing (NDT) is one of the main procedure of quality control in steel forging, and plays an important role in assuring that steel forgings will perform their usage in a safe, reliable, and cost-effective manner. NDT technicians perform the necessary tests to locate the indicators and discontinuities that may cause failures or shut downs in such systems. These tests are performed in a manner that does not affect the future usefulness of forgings– hence, the name “nondestructive.” NDT allows for careful and thorough materials evaluation without the need for deconstruction or damage. NDT is typically used at various points in a part’s life cycle. NDT can be used prior to the use of a component for the sake of quality control. NDT is also employed while components are in use to detect service related conditions caused by wear, fatigue, corrosion, stress, or other factors which affect reliability.

In the Oil & Gas industry, the equipment responsible for drilling and transporting their precious cargo is subject to some of the harshest environmental and fatigue conditions. This equipment is designed to survive a multitude of temperature and pressure conditions, and the expectations are that the fasteners used to assemble this equipment will sustain these extreme conditions as well. This is where JM Hardware® fastener shines.


At JM Hardware®, our product is built with safety and security as the cornerstones of our processes. Our fasteners are “Forged From Integrity” to withstand the extremely rigorous applications that our customers require. For over 16 years, JM Hardware® has manufactured world class hex bolts, double-ended studs, and threaded rod for customers around the world. So when the application is for a large piece of equipment in an absolute severe environment, our customers turn to us to ensure that the difficult applications are fastened securely with a JM Hardware® bolt.


Products offered for the Oil & Gas industry:


• Property classes 8.8, 10.9, 12.9 in addition to ASTM B7/L7
• Hex Bolts M20-M100
• Stud Bolts M20-M100
• Threaded Rods M20-M100
• Riser Flange Bolts in AISI 4340 manufactured to customer spec. and requirements.

My name is Mike.I am a fastener wholesaler from Mexico. I remember clearly when we find Shanghai J&M first time is from google. Our first order is A193 B7 stud bolt and A194 Grade.2H nuts, the value is not big ,just as a trial order. When we received the goods , tidy and strong package , complete and professional test report made a good impression on me. After each items were all passed the test in our own lab,and each target is much higher than the standard specification, our company is very satisfied with JM products.  Since we have a bad experience ,purchase the same stud bolts and nuts in China with a little low price.When got the products, many of them were not meet the standard. So from that time, our company began to purchased bolts ,nuts and washers from JM largely. Now it is more than three yeas. It is very lucky to find shanghai J&M at that time, makes my purchase work become more high-efficient and convenient and relieved .

Fasteners And Metal Hardware Customer Views: It's very nice to find a good supplier, just like Shanghai J&M.

ltd customer review:
I am a fastener dealer in USA. Shanghai J&M is my most important fastener supplier. We have cooperated from 2008 year and have purchased many heavy hex bolt, heavy hex nut, F436 washer,guardrail bolt etc. The quality is good . During these 8 years , there are very little claim. Even if a complaint , J &M  will deal with it very positive and fast.  Thank you for Xarella manager supply the good service to us. She is very professional in fastener field and advice us choose the best solution many times. After seven years cooperation with J&M ,my biggest feeling is Quality in guarantee, professional service in place, J&M trustworthy. So I always introduce J&M to my friend,when they need to purchase bolts and nuts largely.

When it comes to structural fasteners, JM Hardware® is the only name you need to know. Our professional-grade bolts and nuts are precision engineered for strength, versatility and reliability. With innovative designs that make driving fast and easy, the entire JM Hardware® line helps keep installed costs low while meeting the highest demands. Our broad selection of fasteners is available in a wide variety of lengths for any application. Whether you’re building a new subdivision, retrofitting, renovating, installing cabinets, or assembling a deck, dock or pier, there’s no better way to get the job done.

JM Hardware® offers a comprehensive range of top-quality wireless tower components including: hardware, kits, structural support and fasteners. With over a decade of industry experience, we are committed to providing a cost-effective solution for your business needs. Contact us to discuss how our components, manufacturing, distribution, and inventory management services can help you lower your costs and production down time. Our goal is to provide an all-in-one solution.

JM Hardware® Fasteners for Clean, Renewable Solar Power Generation
We are on the forefront of clean, renewable solar power generation. Our full line of solar panel hardware and other renewable energy products can be used for all PV installations. We don’t have a traditional catalog or line card because we approve and supply thousands of the most popular stainless steel solar fasteners. Our solar products include the following:


Solar Installation Hardware for:
Residential, commercial, community, and utility scale
Roof Mount Systems
Ground Mount Systems
Product configurations:
Stainless steel options
Alloy steel with galvanized and organic coatings that can surpass 1,000+ hours of salt spray resistance
Import and domestic options available
Product types:
Solar Screws and Structural Bolts: self-drilling screws, self-tapping screws, sealing screws, socket cap screws, flange screws, hex cap screws, lag screws, heavy hex bolts, hanger bolts
Washers: flat washers, lock washers, sealing washers, Belleville washers
Nuts: lock nuts, k-lock nuts, flange lock nuts, heavy pattern nuts, flange nuts
Mounting hardware, stampings, and brackets
Solar Accessories:  clamps, cable ties, sealants, adhesives, clips
Packaging configurations