Kennametal 1016682 Boring Bar Shim Idsn 0.5in Ic

Product Description

The KENNAMETAL 1016682 is an IDSN-style shim designed for indexable boring bar toolholders. It seats beneath the cutting insert to provide a stable, repeatable contact surface that maintains insert positioning and absorbs cutting forces during machining. The shim features a negative rake geometry, a 0.5-inch inscribed circle (IC) size, and a thickness of 0.25 inches. It is compatible with diamond-shaped indexable inserts. Licensed machinists, toolroom technicians, and CNC lathe operators working with boring bar assemblies will use this shim as a consumable wear component or replacement part in precision metal-cutting applications.

This shim is intended for use in indexable boring bar toolholders configured for diamond-shaped inserts with a 0.5-inch inscribed circle. It suits negative-rake insert seating arrangements commonly found in internal turning and boring operations on CNC and manual lathes. It is sold individually but carries a minimum order quantity of 10 units, making it appropriate for shops that maintain shim inventory alongside insert stock. Applications span general-purpose ferrous and non-ferrous boring work where toolholder seat integrity directly affects dimensional accuracy and tool life.

Key Features

• IDSN shim style matched to diamond-shaped indexable inserts
• Negative rake geometry for stable insert seating in boring bar holders
• 0.5-inch inscribed circle size for precise insert-to-shim alignment
• 0.25-inch thickness maintains correct cutting-edge height in the toolholder pocket
• Lightweight at 0.05 pounds, minimizing toolholder assembly weight impact
• Sold per piece with a minimum order quantity of 10 units for shop inventory management

Compatibility

Designed for indexable boring bar toolholders that accept diamond-shaped inserts with a 0.5-inch inscribed circle and require an IDSN-style shim with negative rake geometry. Confirm toolholder pocket specifications before ordering.

Installation Notes

Installation is performed by toolroom technicians or CNC setup machinists. Before replacing a shim, power down all machine axes and confirm the spindle is fully stopped. Remove the existing insert and inspect the pocket seat for wear or debris before placing the new shim. Torque the insert clamp screw to the toolholder manufacturer's specification using the appropriate Torx or hex key; do not substitute fastener sizes or overtighten, as this can crack the shim or distort the pocket.