# Question: What does 5/16 mean on a bolt?

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the 5/16″ is 5/16 of an inch or 5/16 inch. the 18 is the pitch or threads per inch of the bolt. being a hanger bolt means that the other end of the bolt is a wood screw. eagle.

## What size is a 5/16 bolt in metric?

Fastener Conversion Chart

Inch Equivalent Metric Size-PitchISO and IFI Rec.
5/16-18 5/16- 24 M8x 1.25
3/8-16 3/8- 24 M10x 1.5
7/16-14 7/16- 20 M12x 1.75
1/2- 13 1/2- 20 M14x 2

## What does a 3/8 16 bolt mean?

3/8″ is the diameter of the bolt shank… the non threaded part that the threads are cut into. Then in 3/8″ the coarse thread is 16 threads per inch and for fine thread it is 24 threads per inch.

## Is 5/16 The same as M8?

Well, quick answer is no. They are not the same and they are not interchangeable, although they can work under certain circumstances. The most important part is understanding the meaning of M8 and 5/16 to refer to the size of a metric screw or bolt, so then we can see why they aren’t the same thing!

## What does m20 bolt mean?

M10-1.0 x 20

M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.

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## What is a Grade 5 bolt?

Grade 5 Bolts and fasteners are made of medium strength carbon steel and are specified under the Society of Automotive Engineers (SAE). If your application calls for heavier materials, you may need Grade 8 Bolts because they are the hardest and are often used in heavy manufacturing applications.

## How do you identify bolt grades?

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.

## What size is a #10 bolt?

Size Nominal (Major) Diameter [in] Coarse Thread (UNC)
#8 0.1640 32
#10 0.1900 24
1/4″ 0.2500 20

## What do screw numbers mean?

Screw sizes are designated by a number that indicates the diameter and the length of the screw in inches (Table 10-2). The smallest diameter screw is 0, and the largest commonly available is 24. For bench work, the most useful sizes are 4 through 12. Of those sizes, 6, 8, and 10 are probably used more than any others.

## What does 5/16 mean on a bolt?

the 5/16″ is 5/16 of an inch or 5/16 inch. the 18 is the pitch or threads per inch of the bolt. being a hanger bolt means that the other end of the bolt is a wood screw. eagle.

## What do bolt size numbers mean?

Diameter: the larger the number, the larger the fastener. Pitch: the larger the number, the more coarse the thread (the fewer the threads per unit of measure); coarse is the most common metric thread and is assumed when pitch isn’t specified. Length: the larger the number, the longer the fastener.

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## What are bolt sizes?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.