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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 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

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

What is a trapezoidal screw?　Tr　TM　TW　ACME

What is a trapezoidal screw? Tr TM TW ACME

It is a target cross-sectional screw with a large proportion of the top of the mountain and the bottom of the valley.

Currently, OSG supports trapezoidal screw taps and gauges as special products.

Tr : Metric Keystone Screw JIS B 0216 0217

TM : 30° trapezoidal screw Conventional JIS

TW : 29° trapezoidal

No : 1814

公開日時 : 2019/05/08 16:33 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

Is it possible to share G, PF, and tools?

Is it possible to share G, PF, and tools?

Tools such as taps, threaded round dies, and other machining tools can be shared.

However, the gauge must be as instructed in the drawing.
This is because the dimensional tolerance on the gauge side, not the screw, is different, and the pass/fail judgment may differ between G and PF gauges.

No : 911

公開日時 : 2019/02/28 12:58 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

Rp and PS threads, tool sharing

Rp and PS threads, tool sharing

There are two types of parallel internal threads for pipes: Rp of the current JIS and PS of the conventional JIS.
It is possible to share tools such as taps.
However, gauges cannot be shared. You will need a gauge as instructed in the drawing.

Tapered female thread + tapered external t

No : 912

公開日時 : 2019/02/28 12:58 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

Difference Between PS and PF

Types of screws PS and PF Is it possible to share thread machining tools and gauges?

Both are parallel screws for pipes, but the tolerance settings are different.

Gauges cannot be shared with machining tools.

division

No : 914

公開日時 : 2019/02/28 12:58 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

How to represent the size of a unified thread series

How to express the name of the unified thread series

There are two types of unified threads: No. XX notation and notation using fractions such as 1/4.

It may also be expressed using a decimal point, and 1/4-20 UNC and 0.250-20 UNC are the same unified thread.

Please refer to the following document for the size, nominal di

No : 918

公開日時 : 2019/02/28 12:58 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

What is BA Thread?

BA thread refers to the type of thread called BA in the British Standard BS, and the thread angle is 47.5 degrees.

For example, if size is "2BA", then 2 represents the size number.

The size of the pitch is determined by the size number, and in the case of the

No : 461

公開日時 : 2019/02/26 18:10 更新日時 : 2024/08/28 02:29

カテゴリー： Screws in general

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What is a trapezoidal screw? Tr TM TW ACME

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