Value Collection LS-33 Differential Screw 1/4-28 1/8 Hex Socket

Product Description

The VALUE COLLECTION LS-33 is a differential screw designed for use with indexable tooling systems in machining and metalworking applications. This screw features a 1/4-28 thread size and a 1/8 inch hex socket drive, providing secure clamping force to hold indexable inserts firmly in place during cutting operations. The overall length is 0.25 inches with a right-hand thread length of 0.53 inches and a left-hand thread length of 0.50 inches. Machinists and toolroom technicians install this hardware as part of indexable insert toolholders, boring bars, and milling bodies where precise, repeatable insert clamping is required.

This differential screw is suited for use in production machining environments, tool crib replenishment, and toolholder maintenance. It is compatible with clamp-style indexable toolholders that accept a 1/4-28 differential screw with a 1/8 inch hex socket drive. The dual opposing thread design allows a single rotation to apply significant clamping load, making insert changes faster and more consistent on the shop floor. This part is sold individually and is ordered in multiples of 10.

Key Features

• 1/4-28 thread size for precise torque and clamping engagement
• 1/8 inch hex socket drive for standard hex key installation
• Differential screw design applies high clamping load with minimal rotation
• Right-hand thread length of 0.53 inches and left-hand thread length of 0.50 inches
• Lightweight at 0.02 pounds for easy handling during insert changes
• Industry standard number LS-33 for cross-reference and replacement sourcing

Compatibility

Designed as a replacement or spare differential screw for clamp-style indexable toolholders that accept a 1/4-28 thread differential screw with a 1/8 inch hex socket drive.

Installation Notes

Installation is performed by machinists or toolroom technicians using a calibrated hex key or T-handle driver sized to 1/8 inch. Always remove the toolholder from the machine spindle and ensure the machine is powered down and locked out before servicing insert clamping hardware. Do not overtighten, as differential screw threads can be damaged by excessive torque; follow the toolholder manufacturer torque guidance. Inspect the screw threads and seating surface for wear or damage before reinstalling an indexable insert.