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| Material: | Stainless Steel |
| Type: | Tool |
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M2-M16 tailless wrench
Tail-less screw bushings, also known as wire screw bushings without mounting shanks or tail-less threaded bushings, are a kind of high-precision, high-strength threaded fasteners, which are mainly used for enhancing and repairing internally threaded holes, or constructing high-strength, high-abrasion-resistant threaded joints on low-strength materials. The distinguishing feature of the Tailless Sleeve is the absence of a mounting shank (tail shank) at each end, unlike conventional wire nuts that require removal of the mounting shank after installation. The design of the tailless sleeve allows for bi-directional installation, eliminating the need to differentiate the direction of installation of the sleeve, and making the installation process quicker and easier. It has a precision threaded structure inside and a hook and groove or guide structure outside, which makes it easy to install it into the pre-punched bottom hole with a special tool.
After installation, the sleeve can be tightly integrated with the hole, providing great axial load bearing capacity and torsion resistance. Tail-free screw sleeve is widely used in aerospace, automotive manufacturing, machinery and equipment, electronic products and other fields, especially in the fastener strength requirements of high, limited installation space or repeated disassembly and installation of high frequency occasions to play an important role. Common materials include stainless steel, carbon steel, etc., with excellent corrosion and abrasion resistance, which greatly extends the service life of the threaded hole and the reliability of the connection.
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| Thread specification | Bit diameter (mm) | Thread specification | Bit diameter (mm) |
| M2*0.4 | 2.1 | M8*1 | 8.3 |
| M2.5*0.45 | 2.6 | M10*1 | 10.3 |
| M3*0.5 | 3.1 | M10*1.25 | 10.3 |
| M4*0.7 | 4.2 | M12*1.25 | 12.3 |
| M5*0.8 | 5.2 | M12*1.5 | 12.4 |
| M6*1 | 6.3 | M12*1 | 12.3 |
| M7*1 | 7.3 | M13*1.25 | 13.3 |
| M8*1.25 | 8.3 | M14*1.5 | 14.4 |
| M10*1.5 | 10.4 | M14*1.25 | 14.3 |
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