Value Collection 6-999-268 Indexable Lock Screw 0.50 in Ic

Product Description

The VALUE COLLECTION 6-999-268 is a lock screw designed to secure indexable inserts in square-shoulder face mills and shell mills. Lock screws of this type hold cutting inserts firmly in the insert pocket, preventing movement during machining operations. The insert inscribed circle (IC) compatibility is 0.50 inches. At 0.02 pounds, this is a small but critical fastener that is replaced during routine tooling maintenance. Machinists, toolroom technicians, and CNC setup personnel are the primary users of this hardware.

This lock screw is intended for use with square-shoulder face mills and shell mills that accept indexable carbide or cermet inserts with a 0.50-inch inscribed circle. It is a replacement-grade component used when the original screw shows thread wear, stripping, or damage from over-torquing during insert changes. Sold individually, it is suited for shops that need single-unit replacement rather than a full hardware kit.

Key Features

• Designed for square-shoulder face mill and shell mill indexable tooling
• Compatible with 0.50-inch inscribed circle inserts
• Lightweight at 0.02 pounds for minimal tooling weight impact
• Replacement-grade screw for routine maintenance and tooling upkeep
• Sold as a single unit (Pkg Qty: 1)

Compatibility

Designed as an OEM-style replacement lock screw for square-shoulder face mills and shell mills that use indexable inserts with a 0.50-inch inscribed circle.

Installation Notes

Lock screw replacement is performed by toolroom technicians or machining personnel during scheduled insert indexing or tooling maintenance. Before replacing the screw, ensure the machine spindle is fully stopped and the tool is secured in a vise or holder to prevent movement. Use the correct Torx or hex key driver specified by the toolholder manufacturer to avoid rounding the drive recess. Do not over-torque, as this is a common cause of thread damage in indexable toolholders.