# What does a 3/8 16 bolt mean?

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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.

## What do bolt size numbers mean?

The size of a metric bolt is specified using pitch, diameter, and length in millimeters. For example, in M8-1.0*20, the “M” means the Metric thread designation, the digit 8 refers to the Nominal diameter (in millimeters), 1.0 refers to the pitch, and 20 refers to the length.

## What size is a 3/16 bolt?

American Screw Sizes

Size Nearest Fraction Inch
#6 9/64 0.13
#8 5/32 0.16
#10 3/16 0.19

## 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.

## What pitch is a 3/8 16 thread?

Nominal Size and Threads Per In. Basic Pitch Dia. Basic Pitch Dia.
3⁄8 – 16 0.3344 0.3479
7⁄16 – 14 0.3911 0.405
1⁄2 – 13 0.45 0.4675
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## Are M10 and 3/8 the same?

That said, they are very close, the 3/8″ bolt is about 0.019″ smaller and the pitch’s are very close so the 3/8 -16 bolt will thread in the 10mm x 1.5 but the 10 x 1.5 bolt will not fit the 3/8 but..

## What size bolt should I use?

A typical rule of thumb . . . Use a bolt diameter that is 1.5 – 2.5 times (up to three times) the thickness of the thinner material you are bolting together. So, for 1/8″ material, a 1/4″ diameter is often a good bolt choice. For 1/4″ thick material, perhaps a 3/8″ or 1/2″ bolt.

## What does M12 mean?

6. Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters. The part after the ‘x’ is the pitch — how many mm a thread is wide. To figure out which you have, you can measure the existing part with calipers and a thread gauge.

## 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 is the torque spec for 3/8 bolt?

ASTM A449 / SAE Grade 5*

Bolt Size TPI Tightening Torque (ft lbs)
Plain
516 18 17
38 16 31
716 14 49

## Is there a 3/16 bolt?

3/16 x 1-inchType 316 Stainless Steel Lag Turned Eye Bolt Screw.

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## What size bolt has 3/8 head?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt

US Bolts
Bolt Diameter (in) Head and Wrench Size (in)
1/4 7/16 or 3/8
5/16 1/2
3/8 9/16

## Is a number 10 screw the same as 3 16?

the answer is no 3/16 is . 1875 and 10 is . 190 not much differance but a little the system for numbers is base size .