ねじ・ゲージ | オーエスジー

It is a screw commonly called a parallel screw for JIS (English type) pipes, and it is a parallel screw for mechanical coupling of the old JIS standard. （JIS B 0202）
・Both the external and female threads are referred to as PF.
・It is the PF thread that fits into the PF female thread.
・Thread angle is 55 degrees
・The name is expressed in inch

It is a thread commonly called a parallel thread for JIS (ISO) pipes, and it is a parallel internal thread for tight coupling. （JIS B 0203）

Rp is a thread symbol used only for internal threads.
・The thread that fits into the Rp is a tapered screw for R (ISO) pipes.
・Thread angle is 55 degrees
・The name is expressed in inches,

It is a thread commonly called a parallel screw for JIS (English type) pipes, and it is a parallel thread for tight coupling of the old JIS standard. （JIS B 0203）
・Female threads are referred to as PS.
・For the internal thread of the PS, the male screw that fits together is PT (taper).
・Thread angle is 55 degrees
・The name is expressed in i

It is a thread commonly called a tapered thread for JIS (ISO) pipes, and it is a tapered internal thread for tight bonding. （JIS B 0203）
・Female threads are denoted as Rc. The threads that fit together are R (taper).
・Thread angle is 55 degrees
・The name is expressed in inches, and the pitch is expressed in the number of mountains between 25.4

It is a thread commonly called a tapered screw for JIS (English type) pipes, and it is a tapered thread for tight coupling of the old JIS standard. （JIS B 0203）
・Both the external and female threads are denoted as PT.
・In contrast to the PT tapered thread, the fitting female screw is PT (tapered) or PS (parallel).
The thread angle is 55

Calibration means how much error is the value represented by the measuring instrument compared to the standard value (standard instrument)? It refers to the work of confirming.

A gauge that describes the certification of items, size , measurement items, etc. is called a "calibration certificate".

In additi

A trapezoidal screw with a thread angle of 29° according to the American and British standards.
The outer diameter of the external thread is the fraction of an inch, and the pitch is the number of chevrons per inch.

Wear Inspection Screw Ring Gauge is a gauge that allows you to check whether the plug gauge is worn or not.

 

The diameter of the plug gauge decreases as it wears out over time.

If the diameter becomes too small due to wear, the plug gauge will not be able to make the correct decision.

 

The wear inspect

The wear inspection screw plug gauge is a gauge to check whether the limit ring gauge for screws is too worn.

The wear i