Bolt head markings what do they mean? how to identify bolt grade? Determining bolt grade and head marking.
In this video you will know about bolt grades or fastener grade of metric fasteners and how to identify bolt strength by bolt grade.
What does the bolt grade mean?

following questions are answered in this video.
bot grade explained.
what is bolt marking meaning.
What is the meaning of bolt grade or fastener. grade of metric fasteners.
Bolt head marking we have seen on the bolt head but what they mean.
Metric bolt head stamps .
what is the strongest bolt grade.
what is the meaning of bolt grade.
what is the meaning of bolt head marking.
what is bolt property class.
what is the property class of fasteners.
Is a 10.9 Bolt stronger than Grade 8?
Are Grade 8 bolts the strongest.
Is a Grade 5 bolt stronger than a Grade 8.
What is the difference between a 10.9 and 12.9 bolt.
what is bolt grade.
bolt grade 8.8 meaning.
Bolt Head Markings and What is the meaning of bolt head markings.
Fasteners Bolt Grades Strength & Materials

What is the strongest bolt grade

different grades of bolts?

grades of bolt strength.

how to calculate bolt strength.

how to calculate bolt proof strength.

how to calculate tensile strength of bolt.

Property Class is a designation system which is used to defines the strength of metric fasteners i.e Bolts nuts as per ISO898- part 1. The metric fasteners are designated by a symbol comprised of 2 numbers, separated by a decimal. For example 4.6 and 8.8. The property class is normally stamped on the head of the bolt.
The first digit of bolt grade represents (1/100) th part of the nominal tensile strength or proof load stress in mega pascals. For example, a bolt with property class 4.6 have nominal tensile strength equal to 4 x 100 = 400 MPa.

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