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The DORIAN TOOL 73310190972 is a T8 Torx drive clamping screw designed to secure indexable inserts in boring and turning toolholders. These small-format screws are a critical hardware component in indexable cutting tool assemblies, keeping inserts locked firmly in pocket seats during metal removal operations. At 0.01 pounds per unit, the screw is a lightweight spare part intended to replace worn, stripped, or lost fasteners on existing toolholders. Machinists and toolroom technicians working with indexable boring bars and turning tools should keep a supply of these screws on hand to minimize downtime during insert changes.
This screw is used in CNC and manual lathe, boring, and turning applications where T8 Torx drive insert-clamping screws are specified by the toolholder manufacturer. It is sold individually per package and is intended as a spare or replacement part for indexable toolholding systems that use T8 Torx fasteners to retain carbide or cermet inserts. It is well suited for production shops, toolrooms, and job shops that maintain inventories of spare hardware for their indexable tooling setups.
Designed as a replacement Torx clamping screw for indexable boring and turning toolholders that specify a T8 Torx drive insert-retention fastener. Compatible hardware type is indexable insert seats.
Installation is typically performed by a machinist or toolroom technician during insert changes or toolholder maintenance. Ensure the toolholder is removed from the spindle and the machine is powered down before servicing. Use a correctly sized T8 Torx key or driver to seat the screw fully without stripping the drive recess. Do not overtighten, as over-torquing a small-format clamping screw can damage the pocket seat or the screw itself.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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