Yes, Grade 9 bolts are available and can generally be identified by their three dashed lines on their heads. They are made from high-strength steel alloy that has been quenched and tempered and they are often used in aerospace and other high performance applications.
Grade 9 bolts are usually made to the UNJ thread specification and are often used in industrial and construction applications where high tensile strength is necessary. Their strength and ductility make them well suited for use in areas where shock loading is a concern and also make them better suited for use in areas subject to high levels of vibration.
Grade 9 bolts are designed to be used with Grade 8 nuts and are often used in high-load applications, such as heavy motors and other industrial machinery.
What is the highest grade bolts?
The highest grade for bolts is Grade 8, which is the strongest commercially available bolt grade. It has a yield strength of 150,000 psi and a tensile strength of at least 170,000 psi. Grade 8 bolts feature a six-point head and are made from alloy steel with a zinc plating.
The zinc coating helps prevent corrosion and provides improved strength. Grade 8 bolts are commonly used in automotive and construction applications, where strength and durability are of utmost importance.
What are Grade 8 bolts for?
Grade 8 bolts are made using alloy steel and are heat-treated which makes them extremely strong and give them a minimum tensile strength of 150,000 psi or 1034 MPa. Grade 8 bolts are often used for demanding industrial and automotive applications, where a high strength-to-weight ratio is needed.
They are commonly used in many industries such as construction, mining, manufacturing, and engineering. Grade 8 bolts are typically used for joining heavy materials together and can be used in high vibration and temperature environments.
Grade 8 bolts are also considered to be highly resistant to corrosion due to the zinc plating which is applied to the surface of the bolt to provide protection from corrosive elements in the environment.
Ultimately, Grade 8 bolts provide an effective, strong and reliable fastening solution for many automotive and industrial applications.
What is stronger Grade 5 or Grade 8 bolts?
Grade 8 bolts are stronger than Grade 5 bolts. Grade 8 bolts have a higher tensile strength than Grade 5 bolts and are made from alloy steel instead of carbon steel. Grade 8 bolts also have heavier thread pitches, meaning the threads of the bolt are closer together.
Grade 8 bolts are capable of holding stronger loads than Grade 5 bolts and are used in applications for heavy loads. Grade 8 bolts are also more corrosion resistant than Grade 5 bolts and are commonly used in outdoor applications.
How many pounds can a Grade 8 bolt hold?
The amount of weight a Grade 8 bolt can hold is dependant on its size and the material it is threaded into. Generally, Grade 8 bolts have a tensile strength of 150,000 psi, and yield strength of 120,000 psi, which makes them capable of bearing higher loads than lower grade bolts.
Small bolts of #4 or #5 size can hold up to 2000 pounds while larger sizes such as #9, #10, and #12 can support much higher loads of 4000 to 10,000 pounds. If a Grade 8 bolt is used with a material such as aluminum, the maximum load it can hold is significantly reduced.
Thus, it is important to consider the size, material, and application of the bolt when determining the amount of load it can hold.
Are Grade 5 bolts strong?
Grade 5 bolts are considered medium-strength, falling in between Grade 2 and Grade 8. Grade 5 bolts are made of medium carbon steel and are heat-treated, giving them a higher strength than Grade 2 bolts.
Grade 5 bolts are commonly used in automotive, general construction and equipment repair projects. They are typically much stronger than bolts made from a lower grade of steel, such as Grade 2. Grade 5 bolts are capable of withstanding moderate levels of tension and can resist greater levels of force, providing strong and secure fastening for many applications.
Can I use a grade 8 nut on a Grade 5 bolt?
No, you should not use a grade 8 nut on a grade 5 bolt. Grade 8 nuts and bolts are made of alloy steel with an average ultimate tensile strength of 150,000-170,000 psi and are hardened whereas Grade 5 bolts are made of medium carbon steel and have an average ultimate tensile strength of 85,000 psi and are not hardened.
Using a Grade 8 nut on a Grade 5 bolt could cause over-stressing of the bolt and lead to nut failure and a possible dangerous situation. It is important to always use the correct grade of nut and bolt for a particular application for both safety and reliability purposes.
What is the difference between Grade 5 and Grade 8 shear bolt?
Grade 5 and Grade 8 shear bolts have different strengths and applications due to their different properties. Grade 5 shear bolt is made of medium carbon steel that is heat treated to a higher yield strength, while Grade 8 shear bolt is made of high carbon alloy steel with increased strength and hardness from heat treating.
Grade 5 shear bolts are suitable for applications in which there is a need for a stronger fastener that can handle lower levels of stress, such as small machine parts. Grade 8 shear bolts, on the other hand, are primarily used in applications in which higher levels of stress and loads are needed, such as automotive or aircraft parts.
Grade 8 shear bolts are also corrosion resistant and can handle higher temperature environments. Generally, Grade 5 shear bolts are used for general purpose applications, while Grade 8 shear bolts are used for heavy-duty applications where strength, durability and temperature resistance are needed.
How do you tell if a bolt is Grade 5 or 8?
In order to tell whether a bolt is Grade 5 or 8, you will need to examine several aspects including the head markings, body markings, and configuration.
Which indicate the grade of the bolt. Grade 5 bolts will typically feature a raised triangle symbol, three radial lines, and the number 5 stamped near the head. Grade 8 bolts, on the other hand, include a raised six-point star symbol, two radial lines, and the number 8 stamped near the head.
You can also tell whether a bolt is Grade 5 or 8 by examining its configuration. Grade 5 bolts have a lower strength than Grade 8 bolts and are usually used in non-critical situations. Grade 8 bolts, on the other hand, are designed for critical applications and are generally thicker and stronger than Grade 5 bolts.
When identifying the bolt grade, it is important to remember that the markings and configuration are all that are necessary for grade identification, and should not be confused with the manufacturer’s specification markings.
If you are still unsure, you can always ask a Bolt Expert to confirm that you have the correct bolt grade.
What is 10.9 grade?
10. 9 grade (also known as metric grandness) is an international standard for measuring the fineness of a steel thread. The grade is based on the linear mass density of the thread. The higher the grade number, the finer the thread.
Grade 10. 9 is a commonly used grade for general applications such as structural bolts, nuts and washers. It has a minimum tensile strength of 800 MPa and a minimum yield strength of 783 MPa. Grade 10.
9 is often referred to as a “high tensile” or “high strength” grade because of its impressive strength values. Typical applications for this grade of steel include automotive and aerospace components, hand and power tools and mining equipment.
By comparison, Grade 8. 8 steel has a minimum tensile strength of 640MPa and a minimum yield strength of 600 MPa and is typically used for mechanical engineering components, light-duty construction and low vibration environments.
Is 10.9 stronger than Grade 8?
No, Grade 8 is stronger than 10. 9. Grade 8 is an alloy steel grade that specifically conforms to the Society of Automotive Engineers (SAE) J429 specifications. It is a carbon alloy steel that contains nominally between 0.
55 – 0. 95 % of carbon, with a minimum yield strength of 60,000 psi and a minimum tensile strength of 80,000 psi. On the other hand, 10. 9 is a medium carbon steel that is specially designed to provide enhanced mechanical properties and greater hardness.
Its chemical composition consists of 0. 38-0. 43 % Carbon, 0. 60-0. 80 % Manganese, 0. 15-0. 30 % Silicon, 0. 25 max % Phosphorus, 0. 25 max % Sulfur, and 0. 4-0. 6 % Chromium. It offers a minimum yield strength of 830 MPa and a minimum tensile strength of 980 MPa.
As can be seen from the above figures, Grade 8 is much stronger than 10. 9.
What grade is a class 10.9 bolt?
A class 10. 9 bolt is an ASTM A324 grade 8. 8 bolt that has been manufactured from quenched and tempered medium carbon steel and then further heat-treated for increased strength. This particular grade of bolt offers superior tensile strength to a class 8.
8 bolt, measuring at around 120,000 psi, with a 940 MPa minimum yield strength. The thread pitch is finer than the class 8. 8 to allow for a stronger joint and superior clamping force. Like other grades of bolts, the class 10.
9 is identified by a pattern of raised dashes on the head of the bolt.
What grade bolt is a shear pin?
Shear pins are usually Grade 2 bolts, although other grades (such as Grade 5 and Grade 8) may be used in high-stress applications. Grade 2 bolts are capable of withstanding moderate tensile and shear forces, which makes them suitable for most uses.
Additionally, Grade 2 bolts are economical and widely available. Shear pins are designed to shear or break under a specific load and tend to be lower in strength than standard bolts. Grade 2 bolts are generally used for applications where a low strength is desired, making them a suitable choice for shear pin applications.
What grade bolts for automotive use?
The grade of bolt required for automotive use is dependent on the application and type of vehicle. Generally speaking, automotive grade bolts are usually either grade five (5) or grade eight (8) bolts.
Grade 5 bolts are made from steel, with a black oxide finish, and have a tensile strength rating of 120,000 psi. These bolts are good for general purpose use and resistance to rust and corrosion. Grade 8 bolts are made from medium-carbon alloy steel, are silver in color, and have a tensile strength rating of 150,000 psi.
These bolts are more resistant to wear and tear, and are good for areas that experience high levels of vibration or high stress forces. Many manufacturers also offer specialized bolts and fasteners for use in specific applications.
Generally speaking, it is important that the grade of bolt used is matched to the application and load that it is designed to carry. It is also important to refer to the vehicle service manual to ensure the correct bolt grade and specification is used.
Is Grade 8 or 12.9 stronger?
The answer to this question depends on what type of material is being compared. Grade 8 and 12. 9 refer to the strength of fasteners, such as bolts and screws, and describe a range on the Rockwell c scale.
Grade 8 fasteners are usually medium carbon steel and are heat treated, making them harder and stronger than Grade 2 and Grade 5. Grade 12. 9 fasteners are usually made of alloy steel and are usually through hardened, making them much stronger than Grade 8 fasteners.
When comparing the strength of bolts, Grade 12. 9 typically has a higher tensile strength than Grade 8 and is much harder and stronger. However, grade 8 might be better suited for certain applications, such as outdoor or marine, because of its higher corrosion resistance.
In conclusion, whether Grade 8 or 12. 9 is stronger depends on the application and usage of the material.