Hertel 8000158 Shim Screw Indexable Hex Socket

Product Description

The HERTEL 8000158 is a hex socket shim screw designed for indexable cutting tool assemblies used in external turning applications. Shim screws secure the carbide insert shim within the pocket of an indexable toolholder, maintaining precise insert seating and preventing movement under cutting loads. At 0.34 inches in length and 0.25 inches in both height and width, this fastener is engineered to the tight tolerances required for indexable tooling. Installation and replacement are performed by machinists and toolroom technicians using a standard hex key. Proper shim retention is critical to repeatable insert positioning and consistent surface finish on turned workpieces.

This shim screw is intended for use in indexable external turning toolholders that accept a shim screw of the hex socket drive type. It is a replacement hardware component suited to production machining environments, job shops, and maintenance situations where worn or damaged shim screws must be swapped out to restore toolholder function. Sold individually, it is ordered in minimum quantities of five units. Keeping spare shim screws on hand reduces downtime when a fastener strips or is lost during insert indexing.

Key Features

• Hex socket drive for secure torque application with a standard hex key
• Designed for indexable external turning toolholders requiring shim screw hardware
• Compact dimensions: 0.34 inches long, 0.25 inches wide, 0.25 inches tall
• Lightweight at 0.01 pounds, minimizing added mass in precision tooling setups
• OEM-style replacement geometry for consistent shim retention and insert seating

Compatibility

Designed as a shim screw replacement for indexable external turning toolholders that specify hex socket shim screw hardware. Verify toolholder manufacturer specifications before ordering to confirm thread pitch and head geometry compatibility.

Installation Notes

Installation is performed by machinists or toolroom technicians. Ensure the machine spindle is stopped and all energy sources are locked out before accessing the toolholder. Use the correct hex key size to seat the screw fully without stripping the socket. Do not over-torque; follow the toolholder manufacturer's recommended fastener seating procedure to avoid damaging the shim pocket or screw threads.