What size is a 8.8 Bolt?

If you have ever looked a metric hex bolt you might notice the markings 8.8, 10.9 or 12.9 this does not mean grade 8,10 or 12. The grade 8.8 refers to the tensile strength which is generally 116,000 psi, grade 10.9 is generally 150,000 and grade 12.9 is generally 175,000 psi.

If you have ever looked a metric hex bolt you might notice the markings 8.8, 10.9 or 12.9 this does not mean grade 8,10 or 12. The grade 8.8 refers to the tensile strength which is generally 116,000 psi, grade 10.9 is generally 150,000 and grade 12.9 is generally 175,000 psi.

Subsequently, question is, how strong is a grade 8.8 bolt? Usually a tensile strength in the range of 112,000 to 116,000 PSI. In the metric world (a.k.a. ISO) the most common bolts are marked with an 8.8, 10.9, or 12.9. If there are no head markings at all, they are most likely comparable to the SAE grade 2. The 8.8 is comparable to the SAE Grade 5.

Beside this, how much weight can a 8.8 Bolt hold?

For example, a grade 8.8 bolt will not snap until every square metre of the bolt cross section is carrying a load of atleast 80kg per square millimetre.

What is the difference between 8.8 and 10.9 bolts?

A tempered medium carbon steel. Class 8.8 is hardened, but it is not as strong as class 10.9. A tempered medium carbon steel. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications.

Is 8.8 bolt high tensile?

Grade 8.8 high tensile steel is often referred to as the structural grade for bolts. It is the most common form of high tensile material and is usually stocked in plain finish or zinc. It can be plated in many other coatings.

What does 12.9 on a bolt head mean?

The 12.9 is the Class head marking under ASTM F568M standard for Bolts of a high grade (1220 MPa), being Alloy steel, quenched and tempered. ASTM F568M is an ASTM International standard for metric bolts, screws and studs that are used in general engineering applications.

What is the strongest bolt grade?

The strongest commercial-quality bolt is grade 8, marked by six raised dashes; its medium-carbon alloy steel has been quenched and tempered to achieve a tensile strength of 150,000 psi.

What does 6 markings on a bolt head mean?

Three radial lines will indicate an SAE grade 5 fastener, while six radial lines will indicate an SAE grade 8 fastener. These are the most common grades, but there are others.

What does grade of bolt mean?

When a bolt has a grading of S, it means that it can withstand a stress of 45 to 49.9 metric tonnes per 6.45 cm². This grading, which is typically stamped on the head of the bolt, has the same tensile strength as a grade 8.8 bolt.

How can you tell if a bolt is grade 8?

Look for Bolt Markings If you do not have a magnet you can still identify Grade 8 bolts by brushing the head of the bolt using a wire brush and counting its radial lines. There are six radial lines on the heads of Grade 8 bolts. Length is measured from under the head.

What does M stand for in bolt sizes?

metric

What does m12 bolt mean?

The M8 will measure about 8 mm in diameter, more likely, just a touch undersize, (. 31496″) The M10, about 10 mm in diameter, (. 3937″) and the M12 about 12 mm in diameter, (. 4724″). The “M” designates the bolt is Metric and the number after the M indicates the size.

What size hole do I need for an m12 bolt?

When using the M12 Bolt, you will need to drill a 12mm diameter hole into the substrate and there will need to be a 14mm diameter clearance hole in the item to be fixed in position.

How much weight can a 10mm bolt hold?

Important: Diameter Straight Pull (lbs) 45° Pull (Shoulder Only) (lbs) 10mm 1,628 407 12mm 2,266 567 14mm 3,520 880 16mm 3,520 880

How strong is a m6 bolt?

Minimum Ultimate Tensile Load Thread d (mm) Pitch P (mm) Property Class 6.8 M4 0.70 5270 M5 0.80 8520 M6 1.00 12100

What do the numbers on metric bolts mean?

In addition, most metric bolts are identified by a number stamped on the bolt head, such as 4.6, 5.8 or 10.9. The number has nothing to do with the size, but does indicate the relative strength of the bolt. The higher the number, the stronger the bolt. A metric fastener could be designated M12 x 2, for example.