The IVSN-322 Shim Seat is a precision replacement insert seat designed for indexable turning and boring toolholders that use VNMG-style 35° diamond carbide inserts. Manufactured from hardened, wear-resistant steel, it provides a secure seating surface for accurate insert positioning, improved cutting stability, and protection of the toolholder pocket from wear. Designed for 3/8" inscribed circle (I.C.) inserts with a 1/8" thickness and 1/32" corner radius, the IVSN-322 helps maintain machining accuracy, extend toolholder life, and deliver consistent performance in precision turning and finishing applications. It is an ideal replacement component for CNC and manual machining operations requiring reliable insert support.