Seco 00057655 Lock Screw T6 Torx 1-72 Thread Indexable

Product Description

The SECO 00057655 is a lock screw designed to secure indexable inserts in turning toolholders. It meets Industry Standard CS-110, which defines the interface geometry for indexable insert clamping hardware. The screw uses a T6 Torx drive to allow precise torque application in tight toolholder pockets where hex keys cannot reach effectively. The 1-72 thread size is the standard designation for this class of insert-clamping fastener. At 0.120 inches in overall length and 0.112 inches in head diameter, this screw fits the shallow counterbore found on most turning toolholder insert seats. Machinists and tool crib personnel replace these screws routinely during insert changes or when a screw is stripped or lost.

This lock screw is used in CNC and manual turning applications wherever indexable inserts are held by a center-screw clamping method. It is suited for production turning operations in both job shop and high-volume manufacturing environments. The CS-110 industry standard designation means it is interchangeable with other CS-110-compliant screws across toolholder brands that share this specification. Minimum order quantity is 10 pieces, and the package quantity is 1, so orders are fulfilled in multiples of 10.

Key Features

• CS-110 industry standard compliance for broad toolholder compatibility
• T6 Torx drive allows controlled torque in confined insert pockets
• 1-72 thread size — standard for indexable turning insert lock screws
• 0.120 inch overall length fits standard turning toolholder insert seats
• 0.112 inch head diameter sized for typical counterbore geometry
• Minimum order quantity of 10 supports tool crib stocking requirements

Compatibility

Designed for use with indexable turning inserts requiring a center-screw clamping method on toolholders conforming to Industry Standard CS-110 with a 1-72 thread insert seat.

Installation Notes

Installation is performed by machinists or toolroom personnel during insert indexing or replacement. Power down the machine and ensure the spindle is locked before accessing the toolholder. Use a calibrated T6 Torx driver or torque wrench with a T6 bit and apply only the torque specified by the toolholder manufacturer — do not over-torque, as 1-72 screws are small-diameter fasteners that are susceptible to shear. Inspect the screw threads and toolholder bore threads for wear or contamination before installation.