The steel wire thread is a new type of internal thread fastener. It is a spring -like inner and outer threaded concentric body with high strength, high -precision, smooth surface cold -rolled diamond -shaped stainless steel wire.It is mainly used to enhance and protect the internal threads with low -intensity materials.The principle is to form an elastic connection between the screw and the thread of the substrate, eliminating the screw manufacturing error, and the increase in the connection strength.
Step cover function
1. Extend the service life: Because the steel wire thread is a stainless steel material, which has high hardness, the softer base thread life increases by dozens to hundreds of times; it increases its strength, and it also avoids the deduction.occur.Second, increase the connection strength: It can be used for soft low -intensity alloy materials, wood, plastic, rubber and other easy deformation and low -strength materials such as aluminum -magnesium, avoid sliding and wrong teeth.Third, increase the stress surface: The thin body parts that require a strong connection without adding the diameter of the threaded hole.
Step cover installation
1. Drilling uses the standard drill drilling holes listed in the table. The depth of the drilling hole is greater than or equal to the depth of the steel wire snail sleeve; be careful not to drill the holes into a cone -shaped, and cut it.After drilling, the pilot should not exceed 0.4 snail distance depth, because too large the holes are not conducive to the spinning of the steel wire snail cover.2. The attack wire uses a special tap of the wire threaded tap of the wire screw cover marked with the specified thread specification. The length of the attack wire must exceed the length of the wire screw case.The precision of the attack wire determines the tolerance zone of the final standard inner threaded hole. Users should choose the attack method and lubrication appropriately. The blind hole attack wire should be appropriately force to prevent discount cutting taps.
Thread protective
The threading specifications can be divided into public (thick teeth and fine teeth), unified (UNC) threading (thick teeth and fine teeth) threaded sleeves can be divided into: ordinary type (freeNning) and lock type (tight)SCREWLOCK), the lock -type snail sleeve is to achieve clamping effect on the bolt installed in it through a circle or multi -circle polygonal coil in the middle of the thread, which has the effect of preventing looseness.The additional anti -pine pads are not necessary, which can reduce costs and ensure simplified assembly.The length specification of the thread: The length of the screw case is selected by the multiple of the nominal diameter D of the bolt installed in it. Each type of thread is 1D, 1.5D, 2D, 2.5D, 3D length.For example: M6, 1.5D threading sleeve, can form M6 with a length of 9mm after installation.

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