# What is the torque on a 10 9 bolt?

Contents

## What is the torque on a 10.9 bolt?

Metric Recommended Bolt Torque

Bolt Diameter (mm) Recommended Torque (Nm)
Class 8.8 Class 10.9
10 55 75
12 100 135
14 160 215

## What does 10.9 mean on the head of a bolt?

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 is the torque setting for the Bolts?

US Recommended Bolt Torque

Size Recommended Torque
#10* 31.7
1/4″ 4 7.8
5/16″ 8 11.8

## What is the torque on a 10 32 screw?

Torque Table Standard Bolt Sizes SAE

Bolt Size 18-8 Stainless Steel Brass
8 – 36 22.0 18.0
10 – 24 22.8 18.6
10 – 32 31.7 25.9
1/4″ – 20 75.2 61.5

## How do you calculate bolt torque?

DETERMINING TORQUE

The general equation for bolt load based on applied torque is T = KFiDb where K = torque coefficient. K is a function of the coefficients of friction and collar friction in the joint, and these are based on variables such as surface finish, coatings, and so on.

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## What is the meaning of 8.8 grade in a bolt?

In the case of a 8.8 grade bolt the first figure signifies that the Tensile Strength is at least 800MPa. The second figure signifies that the fastener will begin to yield at 80% of the Ultimate Tensile Strength, i.e. at least 640MPa.

## What does 10 9 mean on a bolt?

The High Tensile Grade 10.9 Screw is a special type that does not need nuts to fix it onto other components. This grade of bolts have tensile strength upto 1040 minimum and yield strength up to 940MPa minimum. The Grade 10.9 Stainless Steel Bolt Material Properties make them applicable in engine parts and components.

## What do letters on bolts mean?

SAE J429 (Society of Automotive Engineers) bolts have radial lines, whereas ASTM (American Society for Testing and Materials) uses a combination of letters and numbers to indicate the grade. Three radial lines will indicate an SAE grade 5 fastener, while six radial lines will indicate an SAE grade 8 fastener.

## What is the torque for a 8mm bolt?

For bolts with a 8mm Thread Diameter: 22Nm. For bolts with a 10mm Thread Diameter: 25Nm.

## What are the torque specifications?

By definition, torque refers to the amount of rotational force at the point of application. When attaching a wheel to a vehicle, torque specifications are the amount of force recommended on the hardware to ensure proper installation. Following exact torque specifications matters for a number of reasons.

## What is the torque setting?

Working on your car means you have to torque parts up when you fit them. Using correct torque levels is very important. Bolts will be tensioned when torquing up. Always use a torque wrench when installing parts on your car!

## How much torque does a M3 screw need?

Torque Specifications

Size Min Max
M3 10 1.4
M4 23 3.2
M5 46 6.3
M6 79 10.9

## What is K factor torque?

K Factor (Basic)

The K factor is used to account for the energy lost to friction and other factors during the tightening process. The generally accepted K factors for this calculation are: 0.20 for assemblies with dry threads (no lubrication) 0.15 for assemblies with lubricated threads.

## How do you tell the grade of a bolt?

You can usually figure out the grade, or strength, of a bolt by looking at the markings on its head. English bolts (U.S.S. or S.A.E) are categorized by grade, from grade 2 to grade 8, where the grade represents inch strength. The higher the grade, the stronger the bolt.