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National pipe thread

National Pipe Thread Taper (NPT) is a U.S. standard for tapered threads used on threaded pipes and fittings  In more »

Unified Thread

The basic profile of all UTS threads is the same as that of all  ISO more »

Trapezoidal thread forms

Trapezoidal thread forms are screw thread profile with trapezoidal outlines. They are the most common forms used for more »

ISO metric screw thread

The ISO metric screw threads are the world-wide most commonly used type of general-purpose screw more »

How to inquiry

When inquiry, clients need to provide as below information, 1. diameter and pitch of the thread 2. right or left handed 3. Plug or more »

Three diameter

Major Diameter=is the largest diameter of a thread Minor diameter=is the smallest diameter of a thread Pitch diameter=is the halfway point between the sharp thread crest & root.

One misunderstanding about testing of ring and plug gages

Today one client from Singapore complained one problem, who have bought both 1/2-10 ACME thread more »

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