Sumitomo U104118 Insert Screw Hex Drive Indexable

Product Description

The SUMITOMO U104118 is a hex drive insert screw designed to secure indexable cutting inserts in turning toolholders. These small-format fasteners are critical components in any indexable tooling system - they hold inserts firmly in the pocket under cutting loads and must be replaced when worn or stripped to maintain accurate insert seating. The U104118 measures 0.38 inches wide by 0.38 inches in length and 0.4 inches in height, and weighs approximately 0.01 pounds. Machining shops and toolroom technicians rely on having the correct OEM-spec insert screws on hand to minimize downtime during insert changes.

This insert screw is used in indexable turning toolholder applications where a hex drive fastener is specified. It is suited for production turning environments - CNC lathes, manual lathes, and turret tooling setups - where indexable carbide inserts are regularly rotated or replaced. The hex drive interface requires a properly sized hex key or T-handle wrench for correct installation torque. Keeping spare insert screws in the toolbox is standard practice for any shop running high-volume turning operations.

Key Features

• Hex drive design for secure, repeatable tightening with standard hex keys
• Designed for indexable turning toolholder insert pockets
• Compact form factor: 0.38 x 0.38 x 0.4 inches
• Lightweight at 0.01 pounds per screw
• OEM-style replacement for maintaining insert seating accuracy

Compatibility

Designed as an OEM-style replacement insert screw for indexable turning toolholders that specify a hex drive insert fastener. Refer to your toolholder documentation to confirm the correct screw specification before ordering.

Installation Notes

Insert screws should be installed by a qualified machinist or toolroom technician familiar with indexable tooling systems. Always power down and lock out the machine before changing inserts or insert screws. Use the correct hex key size to avoid rounding the drive recess - a damaged drive socket will prevent proper seating of the insert. Do not reuse screws that show signs of thread damage or deformation, as a failed insert screw during cutting is a safety hazard.