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1)Metric: M2, M2.5, M3, M4, M5, M6, M8, M10, M12... to M36 and larger.
2)Inch/Unified Threads: #4-40, #6-32, #8-32, #10-32, 1/4"-20, 5/16"-18, 3/8"-16... to 1-1/2" and larger.
3)Lengths: We typically offer a variety of standard lengths, including 1D, 1.5D, 2D, 2.5D, and 3D (D represents the nominal diameter). Custom lengths are also available.
Tangless Thread Insert
0102030405
Free running and self-locking Tangless Insert
Cr-Ni Stainless Steel
Such as 304 and 316 series, offer excellent corrosion resistance and are the most common choice.
High-Temperature Alloys
Such as Inconel X-60, are suitable for high-temperature environments (such as engines and exhaust systems).
Carbon Steel
Surface treatments are typically zinc-plated, cadmium-plated, or phosphated for general corrosion protection.
Aluminum
Lightweight and corrosion-resistant, but with lower strength, it's suitable for light-load applications.
1) No Need to Disassemble the Installation Tang: This is its core advantage. Traditional tail screw inserts require breaking off and removing the installation tang after installation, a process that carries operational risks (such as uneven tang breakage, damage to threads, or the tang falling into equipment). The tailless design completely eliminates this risk.
2)Bidirectional Installation: The insert can be installed from either end, making it ideal for both blind and through-hole applications, especially in blind holes, where its ease of installation is unmatched.
3)Full Thread Strength: Since there is no mounting tang, the insert's effective thread length is 100%, providing complete thread contact and load distribution.
4)No Debris: The installation process generates no metal debris (no need to break off the tang), making it ideal for applications requiring the highest cleanliness, such as aerospace, fuel systems, medical devices, and food processing.
5)Easy and Fast Installation: This simplifies the installation process, eliminating one step, improving productivity and reducing operator skill requirements.
6)High Reliability: This eliminates damage to the insert or initial thread caused by improper tang breaking.
Slotted inserts are widely used in wooden or plastic products requiring strong, removable connections:
01
Aerospace
Engine components, flight control systems, and avionics housings—where reliability and cleanliness are paramount.
01
Automotive
Engine blocks, transmissions, and turbochargers—require high-temperature and vibration resistance.
01
Medical devices
Surgical equipment, imaging equipment (CT/MRI), and implantable device housings—must be absolutely contaminant-free.
01
Energy equipment
Fuel control systems, hydraulic systems, and valves—prevent debris from clogging delicate oil lines.
01
High-end manufacturing
Precision instruments, optical equipment, and robotics—require high-intensity, repetitive disassembly and assembly.
01
Military equipment
Small arms, communications equipment, and armored vehicles—meet the demands of demanding battlefield environments.
While installing a ferrule requires specialized tools, the installation process is simpler and more reliable than installing a ferrule.
Required tools:
1)Specialized tap: A special tap designed to match the external threads of a ferrule (different sizes than taps for ferrules; they cannot be mixed).
2)Specialized installation mandrel/tool head: This tool has internal guide threads that allow the ferrule to be compressed and inserted into the hole.
3)Installation wrench: A manual or pneumatic wrench used to drive the installation mandrel.
1)Drilling: Use a drill bit of the specified size according to the insert specifications to drill a hole in the base material.
2)Tapping: Use a dedicated tap for threadless inserts to create the internal threads. Be sure to thoroughly remove any debris from the hole.
3)Loading the Insert: Thread the threadless insert onto the guide threads of the mounting mandrel. The insert will slightly contract.
4)Threading the Insert: Align the mounting mandrel with the tapped bottom hole. Rotate the wrench vertically to insert the insert into the hole until the desired depth is reached (usually flush with or slightly below the workpiece surface).
5)Removing the Tool: Rotate the mounting wrench in the opposite direction. The mounting mandrel will remove the insert, leaving the threadless insert fully installed.
6)Inspecting: Use a go/no-go gauge or matching screw to check thread accuracy after installation.
Make an free consultant
Welcome to discuss more details and usage of the product with us at any time. We look forward to your contact!