| A Thread size | 4-40UNC | |
| L Insert lengths | 0.375 | |
| E External diameter | 0.328 | |
| Base panel material | Plastic | |
| Materials | Brass | |
| Heat Treatment | None | |
| Surface Treatment | Cleaning | |
| Guideline values for receiving hole diameter | 1/4'' | |
| Installation Equipment/Method | Self-tapping Insert | |

Another Introduction to Brass Threaded Inserts with Cutting Holes
Threaded inserts featuring cutting holes hold a vital position in the industrial sector. Their distinct benefits are particularly evident when it comes to mending broken spark plug retaining threads in cylinder heads.
Designed specifically to tackle thread damage issues in parts like cylinder heads, these threaded inserts with cutting holes are highly effective. When the spark plug retaining threads in a cylinder head get torn or damaged due to factors such as prolonged use, abrasion, or corrosion, this insert can step in for efficient repair. It can be installed directly on the damaged area through self-tapping, eliminating the need for complicated pre-installation procedures.
The self-tapping mechanism of this insert relies on its cutting hole design. During installation, the cutting holes perform a cutting function, gradually penetrating the surrounding material to form a matching thread structure. This characteristic makes the installation process more convenient and efficient, reducing the time and labor expenses involved in the repair. In contrast to traditional repair methods, it avoids the hassle of re-tapping or replacing the entire component.
Moreover, the selection of brass as the material offers numerous advantages. Brass boasts excellent corrosion resistance, which is of great significance for cylinder heads operating in complex environments. It ensures that the repaired threads have a long service life. Additionally, the mechanical properties of brass allow it to maintain a stable connection even when subjected to a certain level of torque and vibration, guaranteeing a tight fit between the spark plug and the cylinder head and thus keeping the engine running smoothly.
In practical applications, these threaded inserts with cutting holes have found widespread use in industries such as automobile manufacturing and engine repair. For car manufacturers, they provide a reliable and cost-effective solution, effectively lowering the scrap rate of components caused by thread damage and enhancing production efficiency. In the field of engine repair, mechanics can utilize this insert to quickly fix damaged cylinder heads, saving repair time and costs and delivering more efficient services to customers.




