Report XL Shelf pin in General Woodworking Talk Posted January 22 Hello. I have kitchen cabinets that have large plastic shelf pins. They keep breaking and I would like to switch to metal pins but I can't seem to find any that will fit. The plastic ones measure 7.9mm. The largest metal ones I found are 7mm and they don't fit. Am I stuck with having to keep buying plastic replacements? Is there something else I can use? Thanks.