# What is the tensile strength of a 1/2 bolt?

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## What is the breaking strength of 1/2 Grade 8 bolt?

For example, a 1/2-inch grade 8 bolt with 13 threads per inch has an effective stress-carrying cross section of 0.1419 square inches, so its breaking load would be 0.1419 (area subject to stress) x 150,000 (tensile strength) = 21,285 pounds.

## What is the tensile strength of a bolt?

Tensile strength is the amount of pull the bolt can withstand before breaking. The method used for tightening the bolt is also dependent upon the grade of the bolt. The grades are indicated on top of the bolts as raised numbers or dashes. There are three main systems of bolt classification: SAE, Metric and ASTM.

## How do you calculate bolt tensile strength?

The tensile load a fastener can withstand is determined by the formula P = St x As. To find the tensile strength of a particular bolt, you will need to refer to Mechanical Properties of Externally Threaded Fasteners chart in the Fastenal Technical Reference Guide.

## What is the tensile strength of a 5/16 bolt?

Material Strength – 60,000 psi J82 60M or Grade 1 or Class 4.8

Size Dia. Tensile Str. Lbs
5/16-18 0.3125 3,144
5/16-24 0.3125 3,480
3/8-16 0.3750 4,650
3/8-24 0.3750 5,268

2 8
7/16 5850 12800
1/2 7800 17000
9/16 10000 21800

## How much torque does a 1/2 inch bolt have?

US Recommended Bolt Torque

Size Recommended Torque
1/2″ 37 45
9/16″ 53 63
5/8″ 73 104

## What is the tensile strength of 1/2 threaded rod?

Left Hand – Coarse Threaded Rods

1/2″-13 6 ft 60000 psi
5/8″-11 6 ft 60000 psi
3/4″-10 6 ft 60000 psi

## Is Grade 8 or 12.9 stronger?

Table 1.

Metric Class 12.9 The highest metric class for strength, it exceeds Grade 8.

## How do you calculate tensile strength?

a) the tensile strength, also known as the ultimate tensile strength, the load at failure divided by the original cross sectional area where the ultimate tensile strength (U.T.S.), σ max = P max /A , where P max = maximum load, A = original cross sectional area.

## How much weight can a M5 bolt hold?

The bolts are torqued to around 4 Nm. The bracket is mounted to 4 tap pads on a ballistic steel side wall that is angled at around 60 degrees to the horizontal. If we disregard the pretension and tap pad, your calculations show that one M5 can hold 4000Kg before it will break!!!

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## How strong is a bolt?

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. Grade 9 bolts are ideal for heavy-duty applications and are also often used in heavy machinery such as bulldozers.

## How much weight can an M12 bolt hold?

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. Similarly a grade 8.8 bolt will not snap until it is carrying a load of 80kg per square millimetre.

Size Pitch (std) Pitch (fine)
M12 1.75 1.5
M16 2.0 1.5
M20 2.5 1.5
M24 3.0 2.0

## Are Grade 2 bolts strong?

Grade 2 hex head bolts are made from low to medium strength carbon steel and offer a tensile strength of 60,000 to 74,000 psi, depending on the diameter. Contractors, designers, OEMs and maintenance staff turn to grade 2 steel fasteners for non-critical joints and applications, mainly because of affordability.

## What is the tensile strength of stainless steel bolts?

The vast majority of stainless steel fasteners available are produced to ISO 3506 Class 70 (this designates a minimum tensile strength of 700 MPa) and are marked as such. If there is no marking it should be assumed the product is Class 50 (minimum tensile strength of 500 MPa).

## What is a Grade 10 bolt?

Class 10. This is a metric nut grading similar to the SAE grade 8 classification, which is used in conjunction with Class 10.9 bolts. This strength of nut is used in automotive, and structural industries, as well as in high temp applications.

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