RMC Insert Shims — Models ISSN-632 to MTN-334

Replacement shims and shim seats for indexable turning and milling tool holders. The shim protects the holder pocket from insert breakage — replacing a worn shim is far cheaper than replacing the holder. Covers the common negative and positive insert geometries (CNMG, DNMG, SNMG, TNMG, WNMG, VNMG and more — match the series to your insert shape). Select your model below.Genuine RMC hardware. Don't see your model? Email our team with your holder designation and we'll match the part. Photo notice: product images are representative of the family. The exact part you receive may differ in appearance (finish, head style or proportions) depending on the model selected — dimensions and fit follow the model number. Proudly made in the USA. Questions about fit? Email our team.