# What size nut goes on a 3/4 bolt?

Contents

## What size nut fits a 3/4 bolt?

US Bolt Head/Wrench Size

Bolt Diameter Head and Wrench Size
Hex Bolt – Lag Bolt – Square Bolt Heavy Hex Bolt
7/16″ 5/8″
1/2″ 3/4″ 7/8″
9/16″ 13/16″

## How do I know what size nut I need for a bolt?

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.

## How do I know what size nut to buy?

If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut. If the nut is US standard, count the smallest lines on the tape measure in sixteenths. Add the sixteenths together to find the size.

## How do you read a hex nut size?

Hex nut size refers to its nominal thread diameter. Typically, sizes range from 1/4″ to about 2 1/2″. Size is specified in inches, usually fractional rather than decimal.

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## How do you read a nut size?

How to Read Screw Sizes

1. Read the first letter of the size. This the largest diameter: the measurement of the screw on the thread. …
2. Read the second number. …
3. Read the third number, generally the one following the “x.”

## What is the standard bolt size?

US Standard Thread Length for Bolts

Bolt Diameter Standard Thread Length (in.) *
Bolts 6 inches and shorter Bolts longer than 6 inches
5/8″ 1-1/2″ 1-3/4″
3/4″ 1-3/4″ 2″
7/8″ 2″ 2-1/4″

## How do I know what size screw I need?

The general rule of thumb is that the screw should enter at least half the thickness of the bottom material, e.g. 3/4″ into a 2 x 4. The other factor is the screw’s diameter, or gauge. Screws come in gauges 2 through 16. Most of the time you’ll want to go with a #8 screw.

## What size head is on a 3/8 bolt?

Hex Bolt Head Size Chart

3/8″ 9/16″
7/16″ 5/8″
1/2″ 3/4″
9/16″ 13/16″

## How do I know if my nut is metric or standard?

How long is that bolt? Most bolts come in pretty uniform lengths; and this is a good way to determine if the bolt is metric or standard. Measure the bolt length (not including the cap), and see if it’s closer to a fraction of an inch, or a nice and round millimeter length that ends in 5 or 0.

## What is a hex flange nut?

Hex Flange Nuts are hex nuts with a wide flanged portion near one end that acts as an integrated non-spinning washer. Flange nuts are used to spread the load placed on the nut over a wider surface area to prevent damage to the installation material. … These nuts come with either a serrated or non-serrated flange.

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## When would you use a hex nut?

Hex nuts are a six‑sided nut and are the most commonly shaped nut today. They are used with anchor shackles, bolts, screws, and other externally threaded components. Hex nuts, in conjunction with these other fasteners, are used to connect both metal and wood components to prevent tension and movement.

## What is a hex bolt?

Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood. … Wood screws have many different types of heads, but the most common are round heads and flat heads.