HeliCoil STI/EG gauges for size and quality control of threads

STI, EG and Heli-Coil gauges are quality tools for critical repair and threading jobs. These gauges are used for checking oversize tapping which is done for fitting wire thread inserts. Wire thread inserts are having external threads which are oversize than the standard size and internal threads which are standard dimensions. When tapped internal threads become oversize and standard screw cannot be fitted then wire threads inserts are used. Oversize tapping is done using wire thread taps and wire thread inserts are fitted in this.

Features and technical characteristics of STI and EG gauges

Specifications: BS 4377 / DIN 8140

All of these gauges are important in engineering and manufacturing industries where threading plays an important role in ensuring the quality and reliability of products and parts.

STI gauges and EG gauges are also known as Heli-Coil thread inserts. It should be noted that "Heli-Coil'' is a registered trademark of Emhart Tecknologies, USA

Tolerance class: 5H and 6H classes are recommended for metric threads.

All the sizes & tolerances not covered in this catalog are in our manufacturing range. Prices on request.

Thread gauges STI: features of use

STI gauges (Screw Thread Insert) are tools used to check the correctness of threads in various parts and tools. Their main purpose is preparation for the installation of thread inserts, which have a special shape for wire turns.

These gauges ensure that the size and quality of the threads meet the requirements necessary for the correct installation of these special inserts. Thread inserts on turns of wire are important because they can restore or reinforce the thread if it is damaged or worn.

STI gauges are used in a variety of industries, such as metalworking, automotive manufacturing, aerospace, and others, where proper threading plays an important role in ensuring product quality and reliability.

Thread gauges EG: application features

EG gauges (Effective Diameter Gauge) are special tools used to measure the diameter of threads inside holes. This is important to ensure that the tapped holes are the correct size so that screws, bolts and other tapped parts can be installed properly.

With the help of these gauges, professionals can accurately determine whether the thread size meets the requirements. This is important to ensure that all parts maintain the appropriate quality and accuracy of the carving. Also, these gauges help set the parts to the correct size so that they fit precisely into the tapped holes.

EG gauges help ensure that all thread parts work together properly and that the threaded holes are the correct size for mounting screws, bolts and other parts.

What is the difference between Heli-Coil and STI thread gauges

Heli-Coil is a brand name for thread wire coil inserts, also known as thread wire coil sleeves. These inserts are used to restore or strengthen the thread in cases where the original thread has become damaged or worn. Heli-Coil gauges help determine the correct size and thread quality for installing these coils.

STI is a generic designation for gauges and tools used to inspect and install thread inserts on turns of wire. This is a general concept that describes the function of these calibers.

TruThread Europe's full gauge range features plain and threaded gauges in a variety of sizes. To order STI inserts, write to us at contact@truthread.eu