Value Collection TGS-1 Lock Screw T10 Torx 6-40 Thread

Product Description

The VALUE COLLECTION TGS-1 is a lock screw designed to secure indexable cutting inserts in toolholders used in turning, milling, and boring applications. This screw uses a T10 Torx drive, which allows precise torque application without cam-out, keeping the insert firmly seated during cutting operations. The 6-40 thread size and 0.5-inch overall length are matched to industry-standard insert pockets. Machinists, toolroom technicians, and CNC setup personnel install these screws as part of routine insert indexing and replacement. The head diameter of 0.22 inches is sized to engage standard insert clamp pockets without interference.

The TGS-1 is suited for use in indexable toolholders that accept 0.375-inch inscribed-circle inserts. These screws are a consumable component in production machining environments and are replaced whenever the thread becomes worn or the drive recess is damaged from repeated torquing. They are commonly found in turning centers, CNC lathes, and milling machines running carbide or cermet indexable inserts. Having a supply of correctly sized lock screws on hand reduces downtime during insert changes.

Key Features

• T10 Torx drive resists cam-out during insert torquing
• 6-40 thread matches industry-standard indexable toolholder insert pockets
• 0.5-inch overall length for proper engagement depth in standard holders
• 0.22-inch head diameter fits standard insert clamp recesses
• Compatible with 0.375-inch inscribed-circle indexable inserts
• Industry Standard Number TGS-1 for cross-reference ordering

Compatibility

Designed as a replacement lock screw for indexable toolholders requiring a 6-40 thread, T10 Torx drive, and a 0.375-inch inscribed-circle insert seating geometry, per industry standard designation TGS-1.

Installation Notes

Installation is performed by toolroom technicians or machining setup personnel using a T10 Torx key or driver. Always power down and lock out the machine before changing inserts or replacing lock screws. Use a calibrated torque wrench or torque-limiting driver set to the toolholder manufacturer specification — do not rely on feel alone, as over-torquing can strip the 6-40 thread or crack the insert. Inspect the screw thread and drive recess before reinstalling; replace the screw if either shows wear.