Thread testing box

Thread testing box is a tool set used to detect and verify the specifications and quality of threaded connectors. The following provides a detailed introduction to the product composition, working principle, main applications, and product advantages:

Product Composition

Thread gauge: It includes various specifications of thread profile gauges, used to test whether the thread profile is standard, such as metric threads, imperial threads, etc. By comparing with the tested thread, it determines whether the profile meets the requirements.

Plug gauge and ring gauge: Plug gauge is used to detect internal threads and determine whether the small diameter, medium diameter, and other dimensions of internal threads are qualified; The ring gauge is used to detect external threads and can determine whether the major diameter, medium diameter, and other dimensions of the external thread are within the tolerance range.

Other accessories: In addition to thread inspection tools, the test box may also be equipped with auxiliary tools such as wrenches and sockets to facilitate the operation and installation of threaded connectors during the testing process. As shown in the picture, elbow fittings are also included.

working principle

Tooth profile testing: Compare the thread profile gauge with the tooth profile of the tested thread. If the tooth profile gauge can fully fit the tested thread, it indicates that the tooth profile meets the standard; If there are gaps or inability to fit, it indicates that there is a deviation in the tooth shape.

Size inspection: When inserting the plug gauge into the internal thread, if it can be smoothly screwed in and reach the specified length without excessive shaking, it indicates that the internal thread size is qualified; The ring gauge is fitted onto the external thread. If it can easily pass through and fit tightly with the external thread, it indicates that the large diameter of the external thread is qualified. By measuring the pitch diameter size, it can be determined whether the pitch diameter meets the requirements.

main purpose

Manufacturing industry: In industries such as mechanical manufacturing, automobile manufacturing, aerospace, etc., it is used to detect the accuracy and quality of threads on components, confirm the excellence and stability of threaded connections during product assembly. For example, the threaded holes on the cylinder block of a car engine need to undergo strict inspection to protect the correct installation of various components.

Repair and maintenance: Used in equipment repair, pipeline installation, and other work to determine whether threaded connections are damaged and whether their specifications match, helping maintenance personnel to quickly and accurately determine repair plans and replace suitable components. For example, during pipeline maintenance, check whether the threaded joint meets the requirements to confirm the sealing of the pipeline connection.

Quality control and inspection: As an important tool for quality control, it is used in raw material procurement inspection, semi-finished product sampling, and finished product factory inspection to prevent unqualified threaded parts from flowing into the next process or entering the market.

Product advantages

Multifunctionality: A set of thread testing boxes can detect threads of various specifications, covering common metric, imperial and other standards, meeting the thread testing needs of different industries and products, avoiding the tedious use of multiple single testing tools.

High accuracy: Inspection tools such as thread gauges, plug gauges, and ring gauges are manufactured according to strict standards, which can accurately detect various parameters of threads and provide excellent basis for thread quality judgment.

Good portability: The test box usually adopts a portable design, which is convenient for workers to carry and use in different workplaces. Whether it is in the workshop production line, construction site or outdoor maintenance operation, thread detection can be carried out at any time.

Easy to operate: No complex operating skills or specialized equipment are required. Simply follow the simple operating steps, observe and compare to obtain the testing results at an appropriate speed, reducing testing costs and technical requirements for operators.