RS PRO Thread Repair Insert, M4 x 0.7 / 1750422

RS Pro Thread Repair Inserts. RS Pro threaded inserts can also be known as threaded bushings. The stainless steel inserts have been designed to be inserted into your object, to add or repair a threaded hole. Quantity per Box. M3 = Box of 20 M4 = Box of 20 M5 = Box of 20 M6 = Box of 20 M8 = Box of 20 M10 = Box of 10 M12 = Box of 5. Application Information. RS Pro thread inserts are typically used in automotive applications. They are designed for use in repair to stripped thread holes.