How to do when it hard to set thread insert into bottom hole?

How to do when it hard to set thread insert into bottom hole?

(1)Use simple spanner due to thread insert lack of pre-compression caused by excessive torque:Replaced with a socket spanne.
(2)With a normal thread insert installation spanner mounted locking thread insert or vice versa:Change the installation spanner that matches of thread insert。
(3) Bottom is not clean or clean-up does not meet the requirements:Cleanup to favor the installation of thread insert.
(4)Socket spanner guide the thread serious wear caused pre-compression is not in place:Guiding thread with screw threaded sleeve special spanner bottom plug gauge detection ,If it is not necessary to use a new socket spanner.
(5)Deburring spot facing too deep:Spot facing should not exceed 0.4 times the depth of the pitch.
(6)The drill chosen too small:Changing the diameter of the drill bit with the appropriate.
(7)Taps badly worn:With steel screw tap within the special plug gauge detection，if failure to pass then need replaced with new taps。
(8)Thread inserts R angle is too large：Manufacturers exchange。
(9) Mounting shank deviation from the center of the circle is too large :Use pliers to amend or exchange with manufacturers.
(10)The diameter of thread insert is too large under free condition:If not through a socket wrench guide thread that is swapped with manufacturers.
(11)Complex matrix:Depending on the specific production situation with manufacturers cooperate to solve,For example, the substrate surface and the inner thread distance is too long and can not accommodate wrench socket, you need specially formulated installation wrench.