Sumitomo 2G00042 Insert Screw T10 Torx M3 X 0.5

Product Description

The SUMITOMO 2G00042 is a flat-head insert screw designed to secure indexable cutting inserts in compatible boring bar toolholders. Sized at M3 x 0.5 thread with a T10 Torx drive, this screw provides reliable clamping force to hold inserts firmly in place during turning operations. The flat head profile seats flush against the insert pocket, minimizing interference with chip flow. At 6.80 millimeters overall length, it is dimensioned for use in compact boring bar applications where precise insert retention is critical. Licensed machinists and CNC toolroom technicians will find this screw a direct-fit consumable replacement for the SumiTurn X-Bar series toolholders.

This insert screw is specified for the Sumitomo SumiTurn X-Bar series boring bar toolholders. It is used in both manual and CNC turning centers where indexable inserts are mounted to internal boring bar bodies. Typical applications include finish and semi-finish boring of bores requiring tight tolerances. The M3 x 0.5 thread size and T10 Torx drive are standard to this toolholder family, making this screw a routine replacement item during insert indexing or changeover. The industry standard number for this screw is BFTX0307A. The insert inscribed circle compatibility is 0.25 inches.

Key Features

• M3 x 0.5 thread size for secure insert clamping in boring bar pockets
• T10 Torx drive for controlled tightening with standard Torx wrenches
• Flat head type seats flush to minimize chip flow obstruction
• 6.80 millimeters overall length sized for SumiTurn X-Bar boring bar bodies
• Industry standard number BFTX0307A for cross-reference sourcing
• Designed as a replacement consumable for routine insert indexing maintenance

Compatibility

Compatible with Sumitomo SumiTurn X-Bar series boring bar toolholders requiring M3 x 0.5 insert screws with a T10 Torx drive. Industry standard cross-reference number is BFTX0307A. Insert inscribed circle size is 0.25 inches.

Installation Notes

Insert screws should be installed and tightened by a qualified machinist or toolroom technician using a calibrated T10 Torx key. Always power down and lock out the machine spindle before indexing or replacing inserts and insert screws. Do not overtighten, as this can strip the thread in the toolholder pocket or crack the insert. Replace insert screws regularly as part of routine insert changeover maintenance, as worn or damaged screws compromise insert seating and dimensional accuracy.