A screw
(1) under the free
state of steel wire diameter of the screw hole diameter larger than the load,
to make special steel wire by a screw assembly torque wrench to make it smaller
in diameter, has been used special tap for tapping into the wire in the screw
hole, packed, have similar to the expansion of the spring steel wire spiral
sets, make its firmly fixed in the threaded hole, and never vary with screw
screw out out.
(2) increase the bearing capacity of the threaded connection and fatigue strength: steel wire spiral sets of screw and the installation of steel wire elastic connection formed between the internal thread of a screw hole, and thus eliminate the screw torque between the internal and external screw thread and tooth type Angle error, can make each lap on the length of the specified thread on uniform distribution load, to strengthen the internal thread, and vibration reduction, thus can improve the fatigue strength of threaded connection parts.
(3) : wear-resisting steel Tangless Insert by the extremely hard cold rolled stainless steel wire precision winding, helical surface hardness can reach HRC43 ~ 50, like the surface of the mirror can be up to 2 ~ 4 mu m (finish) to reduce the friction and wear, can make the screw on the torque generated by the friction and reduce 90%, and with minimal utmost to tighten screw torque moment and screw pull, prevent the screw loose, make all kinds of screw in the best state.
(2) increase the bearing capacity of the threaded connection and fatigue strength: steel wire spiral sets of screw and the installation of steel wire elastic connection formed between the internal thread of a screw hole, and thus eliminate the screw torque between the internal and external screw thread and tooth type Angle error, can make each lap on the length of the specified thread on uniform distribution load, to strengthen the internal thread, and vibration reduction, thus can improve the fatigue strength of threaded connection parts.
(3) : wear-resisting steel Tangless Insert by the extremely hard cold rolled stainless steel wire precision winding, helical surface hardness can reach HRC43 ~ 50, like the surface of the mirror can be up to 2 ~ 4 mu m (finish) to reduce the friction and wear, can make the screw on the torque generated by the friction and reduce 90%, and with minimal utmost to tighten screw torque moment and screw pull, prevent the screw loose, make all kinds of screw in the best state.
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