Hardware for Toolholders and Boring Bars

Find Spare Parts for Tool Holders and Boring Bars

Lose a screw, lock pin, or clamp for your boring bar or toolholder? Wondering what the heck a lock pin or clamp is? Use the following guide to help you sort out what you may need in replacement parts for boring bar or tool holders. Find a definition of each component below the picture.

Here is a diagram (click on image to enlarge) of a Multi-Lock Tool Holder courtesy of Dorian Tool:


INSERT
Either conventional type or chipbreaker type may be used.

LOCK PIN
A solid locking pin for permanent locating of the insert.

SHIM SCREW
Reusable shim screw locks carbide shim into toolholder.

CARBIDE SHIM
Forms a firm seat for insert. Fastened to the shank, but easily replaceable. Protects against
damage to toolholder.

CLAMP
Maximum retention clamp is made of high alloy steel, heat treated. Broad clamp nose provides
positive clamping action. Clamp is positioned to allow for maximum insert retention, with or without chipbreaker.

CLAMP SCREW
Rugged Clamp Screw provides maximum clamping strength.

CHIPBREAKER
Solid carbide, for use when chip control is needed. Available in a range of standard chipbreaker
widths.

Most toolholders and boring bars accept generic shim seats, screws, clamps, and pins. This includes tools from Valenite, Sandvik, Kennametal, and Iscar. Check your manufacturers catalog to be sure of the replacement items part number.