Sumitomo 2G00044 Insert Screw T15 Torx M4x0.7

Product Description

The SUMITOMO 2G00044 is a flat-head insert screw designed to secure indexable cutting inserts in boring bar toolholders. Using a T15 Torx drive, this screw threads into the insert pocket with an M4 x 0.7 thread and seats the insert precisely for repeatable cutting performance. The overall length is 10.30 millimeters with a head size of 0.2205 inches. This hardware is a standard consumable in CNC turning and boring operations where indexable inserts must be changed quickly without disturbing tool geometry. Machinists and toolroom technicians keep these screws on hand as a routine maintenance item whenever running SumiTurn X-Bar or compatible boring bar toolholders.

This insert screw is intended for use in indexable boring bar applications in production and job-shop environments. It is compatible with inserts having an inscribed circle of 0.375 inches, which is a common size across a range of roughing and finishing insert geometries. The Torx drive design reduces cam-out risk during tightening compared to hex-socket alternatives, which matters when torquing small fasteners in tight toolholder pockets. This screw is part of the SumiTurn X-Bar and Sumitomo series tooling ecosystem and is sold individually with a minimum order quantity of 10 pieces.

Key Features

• T15 Torx drive reduces cam-out when seating inserts in confined boring bar pockets
• M4 x 0.7 thread for precise, repeatable insert clamping
• Flat head design seats flush within the insert pocket to maintain cutting clearance
• 10.30 mm overall length sized for standard indexable boring bar insert seats
• Compatible with 0.375-inch inscribed circle indexable inserts
• Sold per piece with a minimum order quantity of 10 units

Compatibility

Designed for use with indexable inserts in SumiTurn X-Bar and Sumitomo boring bar toolholders. Compatible with inserts having a 0.375-inch inscribed circle. Verify insert seat thread specification before ordering.

Installation Notes

Insert screw replacement is a toolroom or machine-operator task performed during insert indexing or changeover. Always disengage the machine spindle and confirm the machine is in a safe, locked-out state before accessing the toolholder. Use a calibrated T15 Torx driver or torque wrench with the correct bit to seat the screw to the toolholder manufacturer's specified torque value. Do not reuse visibly damaged or stripped screws, as a failed clamp screw can result in insert ejection during cutting.