ЁЯФй Use of Thread Gauge
A thread gauge is a tool used to check the size and pitch of a screw thread. It helps identify the type of thread on a bolt, screw, or nut.
ЁЯз░ What is a Thread Gauge?
A Thread Gauge (also called a screw pitch gauge) is a measuring tool with multiple blades or leaves, each having different thread profiles (like teeth).
These blades are used to match and measure the thread pitch on fasteners.
ЁЯУМ Main Uses of a Thread Gauge
1. ЁЯУП To Measure Thread Pitch
The most important use of a thread gauge is to measure thread pitch (the distance between two threads).
This is useful when you don't know what kind of bolt or screw you're working with.
2. ЁЯФз To Identify Thread Type
Helps to identify metric or imperial (inch) threads.
Allows the correct tool or replacement part to be selected.
3. ЁЯзк To Check Thread Accuracy
Used to verify if the threads are worn out or damaged.
Ensures fitting quality and safety in electrical and mechanical assemblies.
4. ЁЯЫая╕П To Avoid Wrong Matches
Prevents using the wrong screw or bolt that may damage the threads or cause accidents.
ЁЯФН How to Use a Thread Gauge?
Select the blade that you think matches the thread.
Place the blade into the thread of the bolt or screw.
If the teeth fit perfectly into the thread grooves тАФ itтАЩs a match!
Read the pitch number written on the blade (e.g., 1.25 mm, 20 TPI).
ЁЯУШ Types of Thread Gauges
| ЁЯФз Type | ЁЯУЛ Description |
|---|---|
| ЁЯУР Metric Thread Gauge | Measures threads in millimeters |
| ЁЯзо Inch Thread Gauge | Measures threads in TPI (threads per inch) |
| ЁЯУЪ Combined Gauge | Has both metric and inch scales |
ЁЯза Example:
If a thread gauge blade marked тАЬ1.25 mmтАЭ fits a bolt, the thread pitch is 1.25 mm (i.e., distance between threads is 1.25 mm).
For inch threads, it might say "20 TPI" тАУ meaning 20 threads per inch.
тЪая╕П Safety & Handling Tips
ЁЯзд Handle carefully тАУ the blades are thin and sharp
ЁЯЫая╕П Keep the gauge clean and rust-free
ЁЯУж Store it in its protective case when not in use
ЁЯСА Use proper lighting while measuring for better accuracy
ЁЯТб Conclusion
A Thread Gauge is a small but very useful tool in electrical, mechanical, and fitting work. It helps in correctly identifying threads, which is essential for safe and accurate assembly.
ЁЯФз "Right thread = Tight fit!"