Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORDERS AND REPRODUCERS AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF 84 66 PARTS AND ACCESSORIES SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH Commodity Code Description 84 66 10 TOOL HOLDERS AND SELF-OPENING DIEHEADS 84 66 20 WORK HOLDERS 84 66 30 DIVIDING HEADS & OTHER SPECIAL ATTACHMENTS FOR MACHINE-TOOLS 84 66 91 PARTS & ACCESSORIES FOR MACHINES OF HEADING 84.64 84 66 92 PARTS & ACCESSORIES FOR MACHINES OF HEADING 84.65 84 66 93 PARTS AND ACCESSORIES FOR MACHINES OF HEADINGS 84.56 TO 84.61 84 66 94 PARTS & ACCESSORIES FOR MACHINES OF HEADING 84.62 OR 84.63