100 pcs. Male Thread Inserts Female Tool do Reducing Nut Repair Stainless Steel Coupler M4x0,7 Characteristic: 1. After installing a set of wire screws in the screw hole of an aluminum alloy workpiece or other materials, the product can form a standard internal thread with high strength, wear resistance and high accuracy 2. You can fix the threaded hole in an economical way. In the event of a thread error or repair of a damaged hole with an internal thread, a threaded insert can be used as a repair method 3. Thread inserts can be used do conversion holes with metric thread on inch, very convenient and fast 4. The use of diamond cross-section steel wire with high strength and high accuracy. Wire thread inserts are also called threaded covers, stainless steel threaded bushings, wire bushings, which are a new type of fasteners with internal thread 5. Used do low strength structural materials such as aluminum alloy, zinc alloy, alloy, copper, plastic, structural plastics, etc. can significantly improve thread strength and wear resistance Specification: Item Type: Thread Inserts Material: SUS304 Model: M4x0.7 Thread specification: M4x0,7 (mm) Outside diameter before installation: ok. 55.3mm/0.20.2in Drill diameter do installation: ok. 4,2 mm / 0,2 inch 1D/1.5D/2D/2.5D/ 3D : Length after installation: ok. 4 mm / 0,2 inch 6 mm / 0,2 inch 8 mm / 0,3 inch 10 mm / 0,4 inch 12 mm / 0,5 inch Number of turns before installation: 4/6,6/9,1/11,7/14,2 Thread protection sleeve model specification: For example: M3x0,5X1,5D, which means that after the end of the screw set, the internal thread is M3, the stroke is 0,5, and the length is 1,5D (the length refers to do 1,5 times the length of the diameter, that is, 1,5x34,5mm), the length here refers to do the length after assembly. How to use: 1. Drilling Do drill the hole, use the drill bit size specified in the wire thread insert performance table. Be careful not to drill a cone-shaped hole. The chips resulting from drilling the hole should be blown out with compressed air. After drilling, the dredging should not exceed a depth of 0,4 graduations. Too large dredge is not conducive to screwing in the wire thread insert. 2. Knock Do threading use special taps do inserts with wire thread. The threading depth must exceed the mounting length of the thread inserts. After tapping, use a compressed air spray gun to blow out impurities. If the thread accuracy is high, check the threaded bottom hole za using a special test do shanks with a bottom hole do wire threaded inserts. 3. Installation Insert the wire screw sleeve do of the mounting wrench (Figure 5 on the right), insert the rear mounting bracket of the wire screw sleeve do of the mounting key guide groove, and turn the mounting wrench handle to screw in the wire screw sleeve screw hole. The correct method is slow screwing in the direction of thread rotation. 4. Remove the handle (break off the mounting bracket) Use a hammer to break the mounting bracket. Use about 200 g of coconut to immediately hit the hammer, and the handle can be removed. Do not use the mounting wrench do rotate in the opposite direction. Do not break the mounting bracket. This situation is very easy. As a result, there was a do fracture of the tail shaft and pulling out the wire. 5. Unscrew If installation problems (such as skipping teeth) occur when installing the wire insert, the threaded insert should be removed and do do the wire insert. List of packages: 100 x thread inserts