# What size is a 3/8 thread?

## What size is a 3/8 thread?

Nominal Size and Threads Per In. Basic Pitch Dia. Nominal Size and Threads Per In.
3⁄8 – 16 0.3344 3⁄8 – 24
7⁄16 – 14 0.3911 7⁄16 – 20
1⁄2 – 13 0.45 1⁄2 – 20

## How is UNF thread measured?

Imperial screw threads are measured in threads per inch, or TPI. As the name suggests, TPI is measured by counting the number of thread peaks along a 1 inch length. Imperial thread pitches are generally divided into one of two categories; UNC (Unified National Coarse) or UNF (Unified National Fine).

What is UNF in measurement?

UNF and UNC are two symbols of Unified Screw Thread Series, which defined based on the amount of threads per inch and standardized with gauge. UNF threads are Unified fine pitch threads, while UNC threads are Unified coarse pitch threads.

Is UNF metric or imperial?

Both of these thread types are use for imperial thread. BSF and BSW are Britisch measurement systems, while UNF and UNC are American measurement systems.

### Is BSF the same as UNF?

BSF and BSW are Britisch measurement systems, while UNF and UNC are American measurement systems. BSF and UNF are the fine thread systems, while BSW and UNC are the coarse thread systems.

### What is the size of a UNF thread?

UNF threads ANSI B1.1: Major Diameter (in) Threads per inch (tpi) Major Diameter Major Diameter Tap Drill Size (mm) 3/8″ – 24 24 0.375 9.525 8.50 7/16″ – 20 20 0.438 11.112 9.90 1/2″ – 20 20 0.500 12.700 11.50 9/16″ – 18 18 0.563 14.288 12.90

What is the tap size of the UNF/UNC?

Tap size NF/NC UNF/UNC Threads per inch Basic major dia (inches) Basic effective dia (inches) 0-80 UNF 80 .0600 .0519 1-64 UNC 64 .0730 .0629 2-56 UNC 56 .0860 .0744 2-64 UNF 64 .0860 .0759

What size are the threads on a UNC drill?

UNC threads according ANSI B1.1: Major Diameter (in) Threads per inch (tpi) Major Diameter Major Diameter Tap Drill Size (mm) 9/16″ – 12 12 0.563 14.288 12.60 5/8″ – 11 11 0.625 15.875 14.05 3/4″ – 10 10 0.750 19.050 17.00 7/8″ – 9 9 0.875 22.225 20.00

## What is the UNC/UNF flank angle?

The UNC/UNF flank angle is 60° Unified threads comes in three different classes: for applications where a liberal tolerance is required to permit easy assembly even with slightly nicked threads most commonly used class for general applications for applications where closeness of fit and/or accuracy of thread elements are important