Functional principle and use of Stainless Steel Helical Inserts

Functional principle and use of Stainless Steel Helical Inserts

Wire Thread Insert (Helical Inserts), or Wire Insert for short, is a new type of female threaded fastener. It is usually made of steel wire winding, spring-type high-precision internal and external thread concentric body. The primary role of the wire thread insert is to enhance and protect the internal threads of low-strength materials. When embedded in aluminum, magnesium alloy, cast iron, glass fiber reinforced plastic, and other low-strength engineering materials, threaded holes can be formed in line with international standards of high-precision internal threads, have a high connection strength, shock resistance, impact resistance, and abrasion resistance, and can be dispersed to protect the substrate threads, greatly extending the service life of the substrate, is widely used in automotive, electronics, machinery, aerospace and other fields. Thread sheath (also known as steel wire thread sheath) is a new type of internal threaded fastener made of high-precision, high-quality rhombic stainless steel wire refining, divided into two kinds of ordinary and locking type, can be screwed into the threaded holes of metal or non-metallic materials, to form a high-strength, abrasion-resistant, high-temperature resistant and has an excellent corrosion-resistant performance of the standard internal thread, to comprehensively improve the use of the performance of the threaded holes to prolong the service life of the machine parts.

Functional properties of Stainless steel Helical Inserts

Stainless Steel Helical Inserts are mainly used for the repair of screw holes and the manufacture of demanding screw holes. They play a significant role in preventing costly machines from becoming inoperable due to damage to the screw holes. Internal threads are often damaged for various reasons, such as stripping, rotting teeth, wear, corrosion, rust, etc. Damage to internal threads can sometimes cause severe losses, lightweight impact on the assembly process and assembly quality, and heavy can cause the whole piece of scrap; steel wire threads provide you with a set of simple and reliable internal thread repair methods, repair threads with the same as the new one, or even better than the new one, for the lower strength of the parts such as aluminum, magnesium alloy, copper, cast iron, steel, plastics, density boards and wood, glass fiber reinforced plastic, which is mainly This is especially true for lower strength parts such as aluminum, magnesium, copper, cast iron, steel, plastics, density boards, wood, fiberglass, etc. The repaired thread will be superior to the original thread.

1. Stronger threads can be produced in most materials.

2. Made of corrosion-resistant stainless steel, which provides excellent rust protection.

3. Reduces thread wear.

4. Can withstand higher temperature differences.

5. Can easily convert inch threads to metric threads and vice versa.

6. Interchangeable with other sheaths of the same type.

How Stainless Steel Helical Inserts for Particle-Free Environments Work?

Stainless Steel Helical Inserts for Particle-Free Environments are generally made from high-quality stainless steel wire with a diamond-shaped cross-section, which is mechanically coiled into a spring-shaped thread. The diameter of the sheath is more significant than that of the screw hole. When installed, the sheath is compressed and tightened and then springs back to its original shape after the installation is completed so that the sheath is permanently fixed in the screw hole. Because of its larger diameter, the threaded sheath has a larger contact surface and is more substantial than the original thread. The outer diameter of the wire sleeve in its state is larger than the diameter of its unique internal thread. When assembled, the wire sleeve is pre-compressed by torsion by installing a wrench thread guide ring, thus making the outer diameter smaller. After screwing in, the wire sleeve expands in all directions, so it is firmly fixed in the threaded hole and will not move with the movement of the screw. Scope of application: automobile maintenance, aviation, aerospace, machinery (textile particular parts, pumps, diesel engines, etc.), locomotives, instrumentation, molds, construction (plastic steel doors and windows), furniture, and other fields.

Specification representation of Lubricated Stainless Steel Helical Inserts

Expression: M6-1*1.5D, i.e., threaded sheath with thread M6, pitch 1mm, length 1.5 times the diameter.

Matching tools include a unique tapping tool, a mounting tool, and threaded bushings.

How to use Lubricated Stainless Steel Helical Inserts without Prong?

1. Drilling: the thread has been damaged with a drill nozzle cut off

2. Tapping: Use special tapping tools to tap the threads in the drilled holes.

3. Installation: Use a unique installation tool to push down the sheath with light force to screw into the screw hole until the distance between the end of the sheath thread and the workpiece plane is not more than 1/4 to 1/2 turn.

4. Cutting off the cross-wire: When the workpiece is through-hole should be installed, the tool should be drawn up, placed on the cross-wire, and then tapped, and the cross-wire knocked off. The blind hole may not cut off the cross-wire.