What grade is 10.9 bolts?

Property Class 10.9 bolts and screws have a minimum tensile strength of 1040 MPa for all sizes. As you can see, they're slightly stronger than the nominal value in the property class designation. Property Class 10.9 bolts are considered high-strength parts. They're in the neighborhood of SAE J429 Grade 8 parts.

Is a 10.9 bolt the same as Grade 8?

10.9 is an indicator of the bolt's strength, roughly equivalent to SAE grade 8, six notches on the head, very high strength, such as would be used for cylinder heads. 8.8 is more common, roughly equivalent to SAE grade 5, three notches, not as strong as 10.9, but still significantly stronger than grade 2.

What does 10.9 mean on a bolt?

Grade 10.9 bolts: As these bolts are most often used in the automotive industry, they are also referred to as 'car bolts'. They are made of boron or carbon steel and have high tensile strength (1040 MPa).

What is the SAE equivalent of 10.9 bolt?

Class 10.9

This is a metric grading similar to the SAE grade 8 classification, which is used in automotive, and structural industries, as well as in high temp applications. Its strength is near the high end of the grade scale, although there are higher grades and strengths for more specialized fasteners.

What grade are ASTM 10.9 bolts?

10.9 Grade Bolt has a minimum tensile strength of 1040 MPa and a minimum yield strength of 940 MPa. It has a high tensile strength and performs well in a variety of situations. 10.9 Bolt is helpful in a variety of sectors and has a wide range of uses.

Bolt grade explained

What is the difference between 10.9 and 12.9 grade bolts?

Tensile strength of a bolt is the amount of force a bolt can withstand when it is being stretched without being deformed. Yield strength is the maximum load without permanent deformation. A 12.9 has a rating of about 175000 to 180000 psi tensile strength and is about 20-25% stronger than 10.9.

What is the difference between ASTM and SAE bolts?

As mentioned above, ASTM fastener standards are typically specified for construction applications, while SAE grades are typically used for automotive and equipment applications.

Is 10.9 a hard bolt?

Hardened Class 10.9 Metric Hex Bolts are a high strength, high tensile fastening solution available in coarse, fine and extra fine thread. One of the most commonly used fasteners, our Class 10.9 hexagonal bolts include DIN 933/961 Full and DIN 931/960 Partial thread options.

Are 10.9 bolts brittle?

For most applications, property class 10.9 fasteners gives the best compromise between strength and brittle fracture risk.

Will Grade 10.9 bolts rust?

These Carbon Steel 10.9 Bolts are also resistant to corrosion and therefore are used in a wide range of industrial applications such as for construction. These fasteners also have excellent finishing and are easy to install, and are also robust.

Why are 10.9 bolts black?

Hydrogen embrittlement is likely to occur after electro-galvanizing after tightening, so bolts above 10.9 are usually not galvanized, and the surface treatment is usually blackened or hot-dip galvanized.

What is the strongest grade bolt?

A grade 8 bolt is the highest grade SAE bolt. Grade 8 bolts have a minimum tensile strength of 150,000 PSI. As a comparison, the ASTM A325 bolt is roughly equivalent to the SAE grade 5.

How much torque can a 10.9 bolt hold?

Did you know an M12 grade 10.9 bolt, a common automotive fastener, has an ultimate tensile strength of nearly 20,000 pounds? According to the chart above, the recommended tightening torque for an M12 bolt with a 10.9 bolt grade would be 114.0 Nm.

How much weight can a Grade 10.9 bolt hold?

From the table at right, for a strength class of 10.9 and a maximum allowable load of 200 kgf, the suitable bolt is a 318［kgf］M8.

Is Grade 8 or 12.9 stronger?

Used in high stress environments, grade 12.9 fasteners are the highest class of metric cap screws. Where Grade 8 fasteners have a 150,000 psi tensile strength, 12.9 fasteners have a 180,000 psi tensile strength, making them more durable than the grade 5.

Can you weld 10.9 bolts?

If you take a heat treated bolt, such as an SAE Grade 5 or 8, or metric 8.8 or 10.9, and weld on it, you've changed the heat treatment, so you have no idea of the new strength. In addition, there may be residual stresses that could contribute to the stress in the bolt.

Is 10.9 steel good?

Grade 10.9 steel: Fasteners made from a grade 10.9 consist of a higher strength alloy steel and which has a tensile strength of 1000 MPa. The highest, most common strength carbon steel available. This grade of steel is required for high strength and reliability projects.

What is the price of 10.9 grade bolt?

Mild Steel High Tensile Bolts 10.9 Grade, For Industrial, 100 at Rs 27/piece in Mumbai.

What is the hardest grade bolt you can buy?

Steel fasteners are commonly available in four grades that are broken into the following categories: 2, 5, 8 and 18-8 stainless (commonly referred to simply as alloy steel). Grade 8 is the hardest, Grade 5 is medium, and Grade 2 is the softest.

Is 10.9 high tensile?

Extra high tensile bolts in grade 10.9 steel made to DIN 931 standards. These bolts are extra high tensile, as opposed to 'standard' 8.8 high tensile bolts and are 'self-colour', menaing they have no plating.

What is 10.9 grade steel?

Grade 10.9 Bolt is a high tensile bolt. These are made up of carbon steels and low boron steels. The material is heat treated by quenched and tempered methods. Navstar Steel is a leading supplier and manufacturer of the Grade 10.9 Bolt products in various dimensions and types.

What is the best grade of steel for bolts?

Typically Grade 8.8 to Grade 12.9 Steel

For fasteners and fixings, high tensile steel is some of the best material on offer – and can be found in a number of homes and auto manufacturing. Screws and bolts made from high tensile steel can withstand high levels of strain without losing their strength or structure.

What are the grades of bolts?

Bolt Grade Numbers

There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Each grade has a specific bolt strength. No matter the system used, the higher number means the stronger the bolt.

Is 10.9 stronger than Grade 8?

RE: Difference between 10.9 and SAE grade 8

Grade 8 according to SAE J429 has a minimum ultimate tensile strength of 150 ksi, which is equivalent to 1040 MPa, which is the minimum ultimate tensile strength of 10.9 fasteners according to ISO 898-1.