Thread Inserts M29 Thread Insert These stainless steel thread inserts are used to couple together the various parts of the COMPACT range.They have a M29 x 1mm thread and an inner diameter of 19mm. Slots at each end allow some leverage totighten against a stop and undo them again. Contact us today Please enable JavaScript in your browser to complete this form.Your Name *Email *Subject *Your Message *CommentSend Message