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Screws & gauges

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What is a PS thread?

What is a PS thread?

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

No : 8192

公開日時 : 2020/11/02 13:13 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

What is an RC screw?

What is an RC screw?

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

No : 8190

公開日時 : 2020/11/02 13:09 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

What is PT screw?

What is PT screw?

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

No : 8189

公開日時 : 2020/11/02 13:06 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

What is a gauge calibration certificate?　What is a Traceability Certificate?

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

No : 7809

公開日時 : 2020/08/25 12:01 更新日時 : 2024/08/28 02:29

カテゴリー： Gauges in general

What is Acme Screw (ACME)?

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.

No : 7791

公開日時 : 2020/08/24 09:54 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

What is Wear Inspection Screw Ring Gauge? How to use it?

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

No : 7714

公開日時 : 2020/06/22 15:57 更新日時 : 2024/08/28 02:29

カテゴリー： Usage

What is a Wear Inspection Screw Plug Gauge? How to use it?

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

The diameter of the limit ring gauge for screws increases as it is used and worn. If the diameter becomes too large due to wear, the ring gauge will not be able to make a correct pass/fail decision.

The wear i

No : 7712

公開日時 : 2020/06/22 14:40 更新日時 : 2022/04/14 17:09

カテゴリー： Usage

How to check the wear of the screw plug gauge?

There are three ways to do this:

(1) Measurement by the three-needle method

JIS B0271

(2) Calibration

(3) Judgment by wear inspection ring gauge

The wear inspection screw ring gauge is a ring gauge that checks whether the effective diameter of the limit plug gauge for screws is within the tolerance range including the wear allowanc

No : 7404

公開日時 : 2020/04/10 00:00 更新日時 : 2022/04/28 00:00

カテゴリー： Usage

high-pressure gas container valve V1 V2 V3

JIS B 8246 Valves for high-pressure gas containers This is a symbol for the container mounting part.

The shape of the thread is a triangular screw with a rounded thread at an angle of 55 degrees, and the pitch is measured along the axial center.

Screw Type: Face Right Angle
* The right angle of the surface is that the thread is at a right angle to the

No : 4381

公開日時 : 2019/12/12 11:44 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

trapezoidal screw tap ACT

This is a tap that can be screwed accurately and easily with trapezoidal screws, and is usually finished with a single raised tap after rough threading, or a pair of increased diameter taps may be used.

This is a special product.

Some of the drawing instructions may be multi-threaded threads, such as two-threaded screws or three-threaded screws.

No : 4351

公開日時 : 2019/12/12 10:04 更新日時 : 2022/05/17 17:06

カテゴリー： Screws in general

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