What does 10 9 mean on a bolt?

Grade 10.9 metric bolts are manufactured using medium carbon steel, medium carbon steel alloy and low carbon boron steel that has been quenched and tempered. The yield strength of the bolts is 940 and the tensile strength is 1040 MPa.

What does 10.9 mean on a bolt head?

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.

What does 12.9 mean on a bolt?

A 12.9 bolt is one of the highest grade of bolts produced. Known for their high tensile strength, they are built with both hex and Torx heads and are available in zinc or chrome finishes. A 12.9 bolt is tightened with a torque wrench to 90 percent of its proof load.

What are 10.9 bolts used for?

The Class 10.9 Alloy Steel Hex Bolts have a hexagonally shaped head that could be used with appropriate tools for maximum tightening. This is the most common shape of the bolts. The Grade 10.9 Nut Dimensions vary in length from 20mm to 200mm depending on the use case.

What is the strongest bolt?

Grade 9 structural bolts, also known as grade 9 hex cap screws, are one the strongest structural bolts that can be used today. While the typical grade 8 bolt has a tensile strength of 150,000 PSI, a grade 9 bolt has a tensile strength of 180,000PSI.

What are the strongest screws?

The Strongest Screws for Any Project

• Self-Tapping Screws. These screws create their own hole as they turn.
• Wood Screws. Wood screws comprise a head, shank and threaded body, and they’re specifically designed to bring and hold together pieces of wood.
• Lag Screws.
• Structural Screws.
• Find Your Screws With All Points Fasteners.

Is a 10.9 bolt metric or standard?

The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9.

What does Ty 8.8 on a bolt mean?

So, in English, a PC 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80\% of the bolt’s nominal tensile strength, or 640 MPa.

Is 12.9 a stainless steel?

A4 Grade Stainless Steel – This is resistant to rust in marine conditions and is stronger than A2. High Tensile 10.9 Grade Steel – This is a stronger grade of High Tensile Steel. High Tensile 12.9 Grade Steel – This is a stronger still grade of High Tensile Steel.

How much weight can a 12.9 bolt hold?

In round terms it is in 10’s of kg per square millimeter of the bolt. For example, a grade 12.9 bolt will not snap until every square millimetre of the bolt cross section is carrying a load of at least 120 kg.

Will 10.9 bolts rust?

Usually, bolts produced in grade 10.9 are tempered and quenched. Speaking of the corrosion resistance properties, while carbon steels are hard, their resistance to corrosion is almost little to none, unlike stainless steel hex head bolts, which depending on their grade tend to range between good to outstanding.

How much weight can a 10.9 bolt hold?

200 kgf
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.